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34 results on '"D'Auria, Virginia"'

1. Hidden and detectable squeezing from micro-resonators

Author

Gouzien, Élie, Labonté, Laurent, Zavatta, Alessandro, Etesse, Jean, Tanzilli, Sébastien, d'Auria, Virginia, Patera, Giuseppe, Institut de Physique de Nice (INPHYNI), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA), Istituto Nazionale di Ottica [Firenze] (INO-CNR), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 (PhLAM), Université de Lille-Centre National de la Recherche Scientifique (CNRS), and ANR-20-CE47-0012,SPHIFA,Photonique Silicium pour le developpement d'applications quantiques basées sur l'intrication de grande dimension dans le domaine fre´quentiel(2020)

Subjects
Quantum optics, Microresonators, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Squeezing, Nonlinear optics NLO, Integrated photonics, FOS: Physical sciences, Ultrafast Optics, Four wave mixing FWM, Optics (physics.optics), Physics - Optics
Abstract

In the context of quantum integrated photonics, this work investigates the quantum properties of light generated by silicon and silicon nitride micro-resonators pumped in pulsed regime. The developed theoretical model, performed in terms of the morphing supermodes, provides a comprehensive description of the generated quantum states. Remarkably, it shows that a full measurement of states carrying optimal squeezing levels is not accessible to standard homodyne detection, thus leaving hidden part of generated quantum features. By presenting and discussing this behaviour, as well as possible strategies to amend it, this work proves itself essential to future quantum applications exploiting micro-resonators as sources of multimode states.

Published
2022

3. Corrélations en intensité générées par mélange à quatre ondes dans un micro-anneau en nitrure de silicium

Author

Bensemhoun, Adrien, Melalkia, Mohamed Faouzi, Esposito, Gaspare, Désières, Yohan, Guerber, Sylvain, Wilmart, Quentin, Roux, Kevin, Olivier, Ségolène, Tanzilli, Sébastien, Etesse, Jean, d'Auria, Virginia, Labonté, Laurent, MELALKIA, Mohamed Faouzi, Institut de Physique de Nice (INPHYNI), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA), Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information (CEA-LETI), Direction de Recherche Technologique (CEA) (DRT (CEA)), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)

Subjects
[PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], [PHYS.QPHY] Physics [physics]/Quantum Physics [quant-ph]
Abstract

International audience

Published
2022

6. Quelles bases pédagogiques précoces pour l’ingénierie quantique du futur ?

Author

Blanquet, Estelle, D'Auria, Virginia, Picholle, Éric, Laboratoire Cultures, Éducation, Sociétés (LACES), Université de Bordeaux (UB), Institut de Physique de Nice (INPHYNI), Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), and SFO

Subjects
[PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], [SHS.EDU]Humanities and Social Sciences/Education, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2021

7. Guided-wave solutions for squeezing generation and manipulation

Author

Melalkia, Mohamed Faouzi, Brunel, Léandre, Mondain, François, Lunghi, Tommaso, Doutre, Florent, Zavatta, Alessandro, Tanzilli, Sébastien, Etesse, Jean, d'Auria, Virginia, and MELALKIA, Mohamed Faouzi

Subjects
[PHYS.QPHY] Physics [physics]/Quantum Physics [quant-ph]
Published
2021

8. Generation of non-Gaussian quantum photonic states with multimode input resources

Author

Melalkia, Mohamed Faouzi, Huynh, Juliette, Tanzilli, Sébastien, d'Auria, Virginia, Etesse, Jean, and MELALKIA, Mohamed Faouzi

Subjects
[PHYS.QPHY] Physics [physics]/Quantum Physics [quant-ph]
Abstract

Non-Gaussian quantum states of light are important resources for implementing quantum information tasks, ranging from fault-tolerant optical quantum information processing to long distance quantum communication. These states can be generated by applying non-Gaussian operations, such as photon addition and subtraction, to an input Gaussian quantum state. Also, the use of Gaussian operations (like homodyne measurement) allows the transformation of non-Gaussian input quantum states while maintaining their non-Gaussianity. It has been shown that in such context, iterative tailoring of arbitrary quantum states is possible, by cascading elementary operation blocks. This invitably comes at the cost of increasing the protocol complexity. Spectral modes, on the other hand, can be used to handily carry multiple quantum states in a single spatial mode. Moreover, multimode states populating such modes are readily available in commonly exploited processes such as spontaneous parametric down conversion.In this work, we propose a protocol to generate non-Gaussian quantum states using spectral multiplexing of input states and Gaussian operations. We give the analytical expression of the output non-Gaussian state as a function of the number of input state, the Gaussian operation and the properties of spectral modes carrying the input quantum states. Taking as an example the cat breeding operation, we show that with a single mixing and measurement operation, we can obtain an amplified output cat state comparable to the one obtained using iterative breeding scheme with multiple mixing operations and measurements with the same number of input states. We show also that the generation of approximated GKP states is possible with this protocol. We believe that the proposed protocol will have a major impact on the field of non-Gaussian quantum states generation, and can be used to extend the study beyond the cases considered in our work.

Published
2021

9. A multimode framework to describe photon subtraction operation

Author

Melalkia, Mohamed Faouzi, Brunel, Léandre, Tanzilli, Sébastien, Etesse, Jean, d'Auria, Virginia, and MELALKIA, Mohamed Faouzi

Subjects
[PHYS.QPHY] Physics [physics]/Quantum Physics [quant-ph]
Abstract

Optical non-Gaussian quantum states can be generated in a heralded manner by applying a photon subtraction operation to a Gaussian input state. In our work, we develop a theoretical framework to describe this operation in the case where the input state is spectrally multimode. This framework allows the optimal design of photon subtraction experiments. We give the exact expression of the generated non-Gaussian state in the general case. We apply this framework to the case of Schrodinger kitten state generation using a multimode squeezed vacuum as input state. We show that the quality of the generated state (in terms of fidelity and Wigner function negativity) can be enhanced by adapting the different experimental parameters.

Published
2021

10. Guided-wave solutions for generating and manipulating squeezed light

Author

Melalkia, Mohamed Faouzi, Brunel, Léandre, Mondain, François, Lunghi, Tommaso, Doutre, Florent, Zavatta, Alessandro, Tanzilli, Sébastien, Etesse, Jean, d'Auria, Virginia, and MELALKIA, Mohamed Faouzi

Subjects
[PHYS.QPHY] Physics [physics]/Quantum Physics [quant-ph]
Published
2021

11. 9~GHz measurement of squeezed light by interfacing silicon photonics and integrated electronics

Author

Tasker, Joel F., Frazer, Jonathan, Ferranti, Giacomo, Allen, Euan J., Brunel, L��andre F., Tanzilli, S��bastien, D'Auria, Virginia, and Matthews, Jonathan C. F.

Subjects
Quantum Physics, ComputerSystemsOrganization_MISCELLANEOUS, Hardware_INTEGRATEDCIRCUITS, FOS: Physical sciences, Physics::Optics, Quantum Physics (quant-ph)
Abstract

Photonic quantum technology can be enhanced by monolithic fabrication of both the underpinning quantum hardware and the corresponding electronics for classical readout and control. Together, this enables miniaturisation and mass-manufacture of small quantum devices---such as quantum communication nodes, quantum sensors and sources of randomness---and promises the precision and scale of fabrication required to assemble useful quantum computers. Here we combine CMOS compatible silicon and germanium-on-silicon nano-photonics with silicon-germanium integrated amplification electronics to improve performance of on-chip homodyne detection of quantum light. We observe a 3 dB bandwidth of 1.7 GHz, shot-noise limited performance beyond 9 GHz and minaturise the required footprint to 0.84 mm. We use the device to observe quantum squeezed light, from 100 MHz to 9 GHz, generated in a lithium niobate waveguide. This demonstrates that an all-integrated approach yields faster homodyne detectors for quantum technology than has been achieved to-date and opens the way to full-stack integration of photonic quantum devices., Nat. Photonics (2020)

Published
2020

12. Generalized approach for enabling multimode quantum optics

Author

Gouzien, Elie, Tanzilli, S��bastien, d'Auria, Virginia, Patera, Giuseppe, Institut de Physique de Nice (INPHYNI), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA), Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 (PhLAM), Université de Lille-Centre National de la Recherche Scientifique (CNRS), ANR-17-CE30-0006,Hy-Light,États quantiques hybrides de la lumière(2017), Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), and COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)

Subjects
Quantum Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], FOS: Physical sciences, Physics::Optics, Quantum Physics (quant-ph), Optics (physics.optics), Physics - Optics
Abstract

International audience; We develop a universal approach enabling the study of any multimode quantum optical system evolving under a quadratic Hamiltonian. Our strategy generalizes the standard symplectic analysis and permits the treatment of multimode systems even in situations where traditional theoretical methods cannot be applied. This enables the description and investigation of a broad variety of key-resources for experimental quantum optics, ranging from optical parametric oscillators, to silicon-based micro-ring resonator, as well as opto-mechanical systems.

Published
2020

13. Effet photoréfractif dans les circuits optiques intégrés à base de LiNbO3 pour les expériences en variables continues

Author

Mondain, François, Brunel, Floriane, Hua, Xin, Gouzien, Elie, Zavatta, Alessandro, Lunghi, Tommaso, Doutre, Florent, De Micheli, Marc, Tanzilli, Sébastien, D'Auria, Virginia, Institut de Physique de Nice (INPHYNI), Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), Laboratoire de physique de la matière condensée (LPMC), and Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS)

Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Continuous variables, Nonlinear integrated photonics, Quantum communication, Lithium niobate
Abstract

International audience; We investigate the impact of photorefractive effect on lithium niobate integrated quantum pho-tonic circuits dedicated to continuous variable on-chip experiments. The circuit main building blocks, i.e. cavities, directional couplers, and periodically poled nonlinear waveguides are studied. This work demonstrates that, even when the effect of photorefractivity is weaker than spatial mode hopping, they might compromise the success of on-chip quantum photonics experiments. We describe in detail the characterization methods leading to the identification of this possible issue. We also study to which extent device heating represents a viable solution to counter this effect. We focus on photorefractive effect induced by light at 775 nm, in the context of the generation of non-classical light at 1550 nm telecom wavelength.

Published
2020

14. Photorefractive effect in LiNbO 3 -based integrated-optical circuits for continuous variable experiments

Author

Mondain, François, Brunel, Floriane, Hua, Xin, Gouzien, Elie, Zavatta, Alessandro, Lunghi, Tommaso, Doutre, Florent, De Micheli, Marc, Tanzilli, Sébastien, D'Auria, Virginia, Institut de Physique de Nice (INPHYNI), Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), Laboratoire de physique de la matière condensée (LPMC), and Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS)

Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Continuous variables, Nonlinear integrated photonics, Quantum communication, Lithium niobate
Abstract

International audience; We investigate the impact of photorefractive effect on lithium niobate integrated quantum pho-tonic circuits dedicated to continuous variable on-chip experiments. The circuit main building blocks, i.e. cavities, directional couplers, and periodically poled nonlinear waveguides are studied. This work demonstrates that, even when the effect of photorefractivity is weaker than spatial mode hopping, they might compromise the success of on-chip quantum photonics experiments. We describe in detail the characterization methods leading to the identification of this possible issue. We also study to which extent device heating represents a viable solution to counter this effect. We focus on photorefractive effect induced by light at 775 nm, in the context of the generation of non-classical light at 1550 nm telecom wavelength.

Published
2020

15. Effect of filtering on the generation of Schrödinger cat-like states from a pulsed multimode squeezing

Author

Melalkia, Mohamed Faouzi, Etesse, Jean, Tanzilli, Sébastien, d'Auria, Virginia, and MELALKIA, Mohamed Faouzi

Subjects
[PHYS.QPHY] Physics [physics]/Quantum Physics [quant-ph]
Abstract

Light is a perfect candidate to carry out quantum information for applications to quantum computation, communication and metrology. Information can be encoded using observables with discrete spectrum (or DV for discrete variable encoding) as well as with continuous spectrum observables (or CV for continuous variable encoding). One of the most used states to encode a CV qubit is the so called optical Schrödinger cat state, i.e. a superposition of two coherent states with the same amplitude and opposite phases. Approximation of these states, named Schrödinger kittens, have been generated in an heralded fashion by subtraction of one or two photons from a degenerate single mode squeezed vacuum states. Experiments have been conducted in continuous wave regime generally using optical parametric oscillators as well as in the pulsed regime. The quality of Schrödinger kittens generated with this strategy, however, suffers from the impurity of the squeezing in the wave-packet of the heralded state. In the CW regime, it is shown theoretically and experimentally that a narrowband filtering of the heralding photon increase the purity of thegenerated state. We extend this study so as to describe also the pulsed regime where the squeezed vacuum state is in general spectrally multimode. We calculate and numerically simulate the state generated when subtracting a photon from an arbitrary multimode pulsed squeezed vacuum state. Inaddition, we investigate its homodyne detection by considering an arbitrary pulsed local oscillator. The fidelity between the heralded state and a perfect single mode photon subtracted squeezed state decreases when the number of modes excited in the multimode squeezed vacuum increases. We show how to increase this fidelity by using a narrowband filter in the heralding path. This study quantifies the effect of spectral filtering on the quality of the generated state using a multimode approach that can be applied to a wide variety of situations. We believe that it will have a major impact on realisation of non-Gaussian states in an heralded fashion.

Published
2020

16. Quantum description of timing jitter for single-photon ON-OFF detectors

Author

D 'auria, Virginia, Gouzien, Elie, Fedrici, Bruno, Zavatta, Alessandro, Tanzilli, Sébastien, D'Auria, Virginia, Institut de Physique de Nice (INPHYNI), Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), Istituto Nazionale di Ottica (INO), and Consiglio Nazionale delle Ricerche (CNR)

Subjects
Physics, Quantum Physics, Photon, business.industry, Detector, FOS: Physical sciences, 02 engineering and technology, 01 natural sciences, Photon counting, Quantum technology, 020210 optoelectronics & photonics, [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Photonics, Quantum Physics (quant-ph), 010306 general physics, business, Quantum information science, Quantum, ComputingMilieux_MISCELLANEOUS, Jitter
Abstract

In the context of ultrafast quantum communication and random number generation, detection-timing jitter represents a strong limitation because it can introduce major time-tagging errors and affect the quality of time-correlated photon counting or quantum state engineering. Despite their importance in emerging photonic quantum technologies, no detector model including such effects has been developed so far. We propose here an operational theoretical model based on positive operator-valued measurements density formalism that is able to explicitly quantify the effect of timing jitter for a typical class of single-photon detector. We apply our model to some common experimental situations.

Published
2018

17. Ultra-fast heralded single photon source based on telecom technology

Author

Bin-Ngah , Lutfi-Arif, Alibart , Olivier, Labonté , Laurent, D'Auria , Virginia, Tanzilli , Sébastien, Laboratoire de physique de la matière condensée ( LPMC ), Centre National de la Recherche Scientifique ( CNRS ) -Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ), DISTANCE (Apex 2011: 2001-06938) - Volet exploratoire Conseil Regional PACA, Conneqt (PEPS INSIS 2011) - CNRS via INSIS, ANR-2011-EMMA-0002,CONNEQT,Synchronisation par horloge distribuée en vue d’application à la cryptographie quantique du future sur longue distance, ANR-14-CE32-0019,SPOCQ, Laboratoire de physique de la matière condensée (LPMC), Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), ANR-11-EMMA-0002,CONNEQT,Synchronisation par horloge distribuée en vue d'application à la cryptographie quantique du future sur longue distance(2011), and ANR-14-CE32-0019,SPOCQ,Cavité optiques à impulsions synchronisées pour l'optique quantique et les systèmes d'information quantique(2014)

Subjects
Waveguide components, Quantum communications, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Physics::Popular Physics, Quantum Physics, [ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics], [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], [ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph], Telecom Optics, FOS: Physical sciences, Physics::Optics, Quantum Physics (quant-ph), Fiber optics communications
Abstract

The realization of an ultra-fast source of heralded single photons emitted at the wavelength of 1540 nm is reported. The presented strategy is based on state-of-the-art telecom technology, combined with off-the-shelf fiber components and waveguide non-linear stages pumped by a 10 GHz repetition rate laser. The single photons are heralded at a rate as high as 2.1 MHz with a heralding efficiency of 42%. Single photon character of the source is inferred by measuring the second-order autocorrelation function. For the highest heralding rate, a value as low as 0.023 is found. This not only proves negligible multi-photon contributions but also represents the best measured value reported to date for heralding rates in the MHz regime. These prime performances, associated with a device-like configuration, are key ingredients for both fast and secure quantum communication protocols., 5 pages, 2 figures

Published
2014

18. Ultrafast quantum optics based on telecommunication technologies

Author

Ngah , Lutfi Arif, Alibart , Olivier, Labonté , Laurent, D'Auria , Virginia, Tanzilli , Sébastien, Laboratoire de physique de la matière condensée ( LPMC ), Centre National de la Recherche Scientifique ( CNRS ) -Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ), ANR Emergence: CONNEQT ANR-2011-EMMA-0002, Subvention Region PACA: APEX 2011: Participation à l'acquisition d'équipement pour le projet DISTANCE, CNRS-INSIS subvention PEPS 2011: CONNEQT, Projet ANR- 2011-EMMA-002-01,Conneqt,Synchronisation par horloge distribuée en vue d’application à la cryptographie quantique du future sur longue distance, Laboratoire de physique de la matière condensée (LPMC), Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), and ANR-11-EMMA-0002,CONNEQT,Synchronisation par horloge distribuée en vue d'application à la cryptographie quantique du future sur longue distance(2011)

Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], [ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics], [ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2014

19. Ultra-fast Photon Pair Sources for Quantum Networking

Author

Ngah, Lutfi Arif, D'Auria, Virginia, Labonté, Laurent, Alibart, Olivier, Tanzilli, Sébastien, Laboratoire de physique de la matière condensée ( LPMC ), Centre National de la Recherche Scientifique ( CNRS ) -Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ), Laboratoire de physique de la matière condensée (LPMC), Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), and COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)

Subjects
[PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], [ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph], Computer Science::Networking and Internet Architecture, Physics::Optics, Physics::Atomic Physics, Quantum Physics
Abstract

International audience; We report a telecom teleportation experiment involving narrowband entangled photons and faint laser pulses. This opens the route towards hybrid quantum nodes combining cold-atom single photon sources and entanglement-based quantum relays.

Published
2014

20. Ultra-fast photon pair sources for long-distance quantum networks

Author

Bin-Ngah , Lutfi-Arif, Alibart , Olivier, Labonté , Laurent, D'Auria , Virginia, Tanzilli , Sébastien, Laboratoire de physique de la matière condensée (LPMC), Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), ANR Emergence: CONNEQT ANR-2011-EMMA-0002, Subvention Region PACA: APEX 2011: Participation à l'acquisition d'équipement pour le projet DISTANCE, CNRS-INSIS subvention PEPS 2011: CONNEQT, Laboratoire de physique de la matière condensée ( LPMC ), Centre National de la Recherche Scientifique ( CNRS ) -Université Nice Sophia Antipolis ( UNS ), and Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA )

Subjects
[ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph], optique quantique, [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], information quantiques, physique atomique, communications quantiques
Published
2014

21. Ultra-fast photon pair sources for advanced quantum communication

Author

Ngah, Lutfi Arif, D'Auria, Virginia, Labonté, Laurent, Alibart, Olivier, Tanzilli, Sébastien, Laboratoire de physique de la matière condensée ( LPMC ), Centre National de la Recherche Scientifique ( CNRS ) -Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ), Laboratoire de physique de la matière condensée (LPMC), Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), and COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)

Subjects
[PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], [ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph]
Abstract

We report a realization of ultra-fast photon pair sources, specif- ically designed for efficient, long-distance, quantum relay operation. As a viable solution, our sources are capable to deliver high quality single photon pairs at high repetition rate, guaranteeing efficient operational condition for intended protocol.

Published
2014

22. Ultra fast photon pair sources for advanced quantum communication

Author

Ngah , Lutfi Arif, D'Auria , Virginia, Labonté , Laurent, Alibart , Olivier, Tanzilli , Sébastien, Laboratoire de physique de la matière condensée (LPMC), Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), Laboratoire de physique de la matière condensée ( LPMC ), Centre National de la Recherche Scientifique ( CNRS ) -Université Nice Sophia Antipolis ( UNS ), and Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA )

Subjects
[ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph], [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph]
Abstract

We report a realization of ultra-fast photon pair sources, specif- ically designed for efficient, long-distance, quantum relay operation. As a viable solution, our sources are capable to deliver high quality single photon pairs at high repetition rate, guaranteeing efficient operational condition for intended protocol.

Published
2013

23. Ultrafast heralded single photon source based on telecommunication technologies

Author

Ngah, Lutfi Arif, D'Auria, Virginia, Labonté, Laurent, Kaiser, Florian, Alibart, Olivier, Tanzilli, Sébastien, Laboratoire de physique de la matière condensée (LPMC), Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), European Project: 244026,EC:FP7:ICT,FP7-ICT-2009-C,QUANTIP(2010), Laboratoire de physique de la matière condensée ( LPMC ), Centre National de la Recherche Scientifique ( CNRS ) -Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ), European Project : 244026,EC:FP7:ICT,FP7-ICT-2009-C,QUANTIP ( 2010 ), Université Nice Sophia Antipolis (1965 - 2019) (UNS), and COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph], [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], Physics::Optics, Quantum Communication
Abstract

International audience; Quantum information science (QIS) is a pioneering field of research at the interface of physics and information science. By harnessing the unique properties of quantum mechanics to code, transmit and process information (Qbit), QIS offers significant opportunities to revolutionise information processing and communication strategies. Of the various physical systems currently investigated, single particles of light (photons) are destined to play a central role due to their inherent low noise, ease of manipulation at the single photon level and light-speed transmission. Photonics Qbits can be conveniently generated through the process of spontaneous parametric down-conversion, whereby a photon from a laser beam incident onto a non-linear crystal can spontaneously split into two daughter photons, conserving momentum and energy. Our approach aims at exploiting the high-maturity of both telecom and integrated non-linear optics as enabling technologies. This should lead to the demonstration of ultrafast photon-pair sources, as well as, when one of the photon is used as a trigger, of ultrafastest heralded Fourier transform single photon sources, all in a guided-wave fashion. In this talk, we will present a photon pair source, based on high-brightness periodically poled lithium niobate waveguide, pumped by a state-of-the-art telecom laser operating at a repetition rate of 10 GHz. We will also show how high quality telecommunication components enable the implementation of an ultrafast Fourier transform limited heralded single-photon source complying with the demand of next generation high bit rates quantum networks.

Published
2013

24. Indistinguishable ultra-fast photon-pair source for advanced quantum protocols

Author

Ngah, Lutfi Arif, D'Auria, Virginia, Alibart, Olivier, Labonté, Laurent, Tanzilli, Sébastien, Laboratoire de physique de la matière condensée ( LPMC ), Centre National de la Recherche Scientifique ( CNRS ) -Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ), Laboratoire de physique de la matière condensée (LPMC), Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), and COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)

Subjects
[PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], [ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph], Guided-Wave optics, Physics::Optics, Quantum Communication
Abstract

Poster; National audience; Quantum information protocols tend to involve more and more entangled photon pairs, for enabling advanced quantum tasks. To compensate for the low success efficiency of these protocols, one can increase the repetition rate of the emitted pairs, up to current telecom standard (40 GHz). In this context, we propose a realization of ultra-fast photon pair sources, intended for either heralded quantum state engineering or entanglement swapping at telecom wave- length. In this paper, we present preliminary results consisting of a two-photon interference experiment using four photons where the achieved raw visibility of the Hong-Ou-Mandel (HOM) dip exceeds 98.6 %. The interfering photons are generated through spontaneous parametric down conversion process (SPDC) in two independent, separate, periodically poled lithium niobate (PPLN) waveguides.

Published
2013

25. Integrated nonlinear optics for Quantum Communication

Author

D'Auria, Virginia, Tanzilli, Sébastien, Alibart, Olivier, Labonté, Laurent, Kaiser, Florian, Bin-Ngah, Lutfi-Arif, Laboratoire de physique de la matière condensée ( LPMC ), Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de physique de la matière condensée (LPMC), Université Nice Sophia Antipolis (... - 2019) (UNS), and COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], [ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2012

26. L'information quantique photonique : le point de vue de l'expérimentateur

Author

Alibart , Olivier, D'Auria , Virginia, Labonté , Laurent, Doutre , Florent, De Micheli , Marc, Martin , Anthony, Kaiser , Florian, Ngah , Lutfi Arif, Issautier , Amandine, Kastberg , Anders, Ostrowsky , Daniel Barry, Tanzilli , Sébastien, Laboratoire de physique de la matière condensée ( LPMC ), Centre National de la Recherche Scientifique ( CNRS ) -Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ), Laboratoire de physique de la matière condensée (LPMC), Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), and COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)

Subjects
[PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], [ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph]
Abstract

National audience; L'information quantique est un champ de recherche dont l'objectif est de tirer parti des possibilités offertes par la physique quantique pour traiter l'information de manière plus efficace. Les deux composantes principales sont d'une part les communications quantiques qui permettent, par exemple, la distribution de clés cryptographiques dont le niveau de confidentialité est inatteignable avec des moyens classiques, et d'autre part le calcul quantique, pour lequel de nouveaux algorithmes permettent de diminuer radicalement les temps de calculs nécessaires pour résoudre certains problèmes tels que la factorisation des grands nombres. Le potentiel de l'information quantique repose sur la richesse des " supports " quantiques (atomes, électrons, photons...) qui offrent une infinité de possibilités : l'état 1, l'état 0 et toutes les superpositions cohérentes des deux. On ne parle plus alors de bits, mais plutôt de qu-bits (quantum bits). En m'appuyant sur les travaux expérimentaux menés au LPMC, je proposerai une introduction à l'information quantique en insistant sur le rôle que jouent les paires de photons dans les protocoles quantiques. Ensuite, je présenterai les moyens que nous explorons pour générer les paires de photons, ainsi que les expériences que nous avons réalisées. Si le temps le permet je présenterai d'autres "outils quantiques" qui sont réalisées efficacement grâce à l'optique guidée.

Published
2012

27. Ultra narrowband polarisation entangled photon-pair source for lond distance quantum networking

Author

Kaiser , Florian, Martin , Anthony, Labonté , Laurent, D'Auria , Virginia, De Micheli , Marc, Alibart , Olivier, Tanzilli , Sébastien, Laboratoire de physique de la matière condensée (LPMC), Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS), European Project: 244026,EC:FP7:ICT,FP7-ICT-2009-C,QUANTIP(2010), Laboratoire de physique de la matière condensée ( LPMC ), Centre National de la Recherche Scientifique ( CNRS ) -Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ), Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ) -Centre National de la Recherche Scientifique ( CNRS ), European Project : 244026,EC:FP7:ICT,FP7-ICT-2009-C,QUANTIP ( 2010 ), and Université Nice Sophia Antipolis (1965 - 2019) (UNS)

Subjects
[ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph], [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], Photonic Entanglement, Physics::Optics, Quantum Communication
Abstract

Poster; International audience; We report here a new generation polarization entangled photon-pair source, based on spontaneous parametric down-conversion in a periodically poled lithium niobate waveguide associated with an advanced observable transcriber.

Published
2011

28. Storing polarization entangled qubits at a telecom wavelength in a cold rubidium atomic ensemble via a quantum interface

Author

Issautier, Amandine, Kaiser, Florian, Liljekvist, Jim, Martin, Anthony, Alibart, Olivier, D'Auria, Virginia, Kastberg, Anders, Labonté, Laurent, Tanzilli, Sébastien, Laboratoire de physique de la matière condensée ( LPMC ), Centre National de la Recherche Scientifique ( CNRS ) -Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ), Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ) -Centre National de la Recherche Scientifique ( CNRS ), DGA, Laboratoire de physique de la matière condensée (LPMC), Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), Université Nice Sophia Antipolis (... - 2019) (UNS), and COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], [ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph], Quantum Networks, ComputerSystemsOrganization_MISCELLANEOUS, TheoryofComputation_GENERAL, Quantum Physics, Cold Atoms
Abstract

Poster; International audience; Quantum communication aims at generating and distributing entangled pairs of photonic qubits (or flying qubits) at a telecom wavelength between distant sites, in order to implement quantum information protocols, such as quantum key distribution, quantum teleportation and quantum processing. For many quantum protocols, and especially for quantum repeaters, which make quantum communication over long distances much more efficient, storing of entangled states is necessary and represents a crucial step towards the realization of a real quantum network. A current outstanding challenge is thus to implement quantum memories for entangled qubits, carried by telecom photons, that combine high efficiency, long storage time and near-perfect fidelity between the input and output states. With this project, our goal is to merge the techniques of telecom wavelengths qubit distribution with quantum storage at shorter wavelength (typically for atomic transitions). Our idea is to map, via a quantum interface, polarization entangled qubits at a telecom wave- length onto a cold atomic ensemble, serving as a quantum memory device.

Published
2011

29. Quantum communication based on integrated nonlinear optics

Author

D'Auria , Virginia, Tanzilli , Sébastien, De Micheli , Marc, Alibart , Olivier, Martin , Anthony, Labonté , Laurent, Ostrowsky , Daniel, Kaiser , Florian, Laboratoire de physique de la matière condensée (LPMC), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique de la matière condensée ( LPMC ), Université Nice Sophia Antipolis ( UNS ), and Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ) -Centre National de la Recherche Scientifique ( CNRS )

Subjects
[ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph], [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2011

30. Narrowband polarization entanglement sources based on integrated optics for telecom quantum applications

Author

Kaiser, Florian, Martin, Anthony, Issautier, Amandine, Labonté, Laurent, d'Auria, Virginia, de Micheli, Marc, Alibart, Olivier, Tanzilli, Sébastien, Laboratoire de physique de la matière condensée (LPMC), Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), European Project: 244026,EC:FP7:ICT,FP7-ICT-2009-C,QUANTIP(2010), Laboratoire de physique de la matière condensée ( LPMC ), Centre National de la Recherche Scientifique ( CNRS ) -Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ), European Project : 244026,EC:FP7:ICT,FP7-ICT-2009-C,QUANTIP ( 2010 ), Université Nice Sophia Antipolis (1965 - 2019) (UNS), and COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Entanglement, Guided-wave Optics, [ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph], [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], Physics::Optics, Quantum Communication
Abstract

International audience; Polarization entangled photon pair sources based on either type-II or type-0 PPLN waveguides emitting at telecom wavelengths are presented. Implementation of such sources, associated high-quality entanglement, as well as related potential for future quantum applications are shown.

Published
2011

31. Analysis of elliptically polarized, maximally entangled states

Author

Martin, Anthony, Smirr, Jean-Loup, Kaiser, Florian, Issautier, Amandine, d'Auria, Virginia, Frey, Robert, Alibart, Olivier, Zaquine, Isabelle, Tanzilli, Sébastien, Laboratoire de physique de la matière condensée (LPMC), Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), Laboratoire Traitement et Communication de l'Information (LTCI), Télécom ParisTech-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS), European Project: 244026,EC:FP7:ICT,FP7-ICT-2009-C,QUANTIP(2010), Laboratoire de physique de la matière condensée ( LPMC ), Centre National de la Recherche Scientifique ( CNRS ) -Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ), Laboratoire Traitement et Communication de l'Information ( LTCI ), Télécom ParisTech-Institut Mines-Télécom [Paris]-Centre National de la Recherche Scientifique ( CNRS ), European Project : 244026,EC:FP7:ICT,FP7-ICT-2009-C,QUANTIP ( 2010 ), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS), Tanzilli, Sébastien, and Quantum Integrated Photonics - QUANTIP - - EC:FP7:ICT2010-02-01 - 2013-04-30 - 244026 - VALID

Subjects
Entanglement, [ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph], [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], Physics::Optics, [PHYS.QPHY] Physics [physics]/Quantum Physics [quant-ph]
Abstract

International audience; We demonstrate high quality polarization entanglement at telecom wavelength, based on guided-wave technology. The fully fibered setup relies on a type-II periodically poled Lithium Niobate waveguide (PPLN/W) emitting pairs of cross-polarized photons (H,V) at 1310 nm. These photon pairs are sent onto a simple 50/50 fiber-optic coupler, leading to an entangled state of the form |Ψ>=(1/21/2)*(|Ha,Vb>+|Va,Hb>) in the coincidence basis, which is eventually distributed to "users" (a,b) through standard optical fibers. Along these distribution channels, the entangled state acquires an unknown phase between its two components leading to an "elliptically polarized" maximally entangled states |Ψ>=(1/21/2)*(| Ha,Vb>+eiφ|Va,Hb>), in which φ is a non random phase, and (a,b) represent the two channels at the output of the emitting source. For such a state, the usual settings used for optimal violation of the Bell inequality are no longer adapted. Thanks to the use of a phase compensator, namely a Soleil-Babinet birefringent system, we demonstrate experimentally that any phase can be compensated, leading to a maximal violation of the Bell inequality when the standard settings are used. Alternatively, we propose here a theoretical approach that allows, when applied to those particular states, determining the phase, and finding new analysis parameters towards optimizing the Bell inequality violation. After introducing our formalism in its generic form, we will show that it can be applied to several existing systems capable of either compensating or analyzing the phase.

Published
2011

32. Source de paires de photons intriqués en polar. émis en bande étroite aux longueurs d'ondes des télécoms

Author

Kaiser, Florian, Martin, Anthony, Labonté, Laurent, d'Auria, Virginia, de Micheli, Marc, Ostrowsky, Daniel Barry, Alibart, Olivier, Tanzilli, Sébastien, Laboratoire de physique de la matière condensée ( LPMC ), Centre National de la Recherche Scientifique ( CNRS ) -Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ), European Project : 244026,EC:FP7:ICT,FP7-ICT-2009-C,QUANTIP ( 2010 ), Laboratoire de physique de la matière condensée (LPMC), Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), European Project: 244026,EC:FP7:ICT,FP7-ICT-2009-C,QUANTIP(2010), Université Nice Sophia Antipolis (1965 - 2019) (UNS), and COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], [ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph]
Abstract

International audience; Nous pre ́sentons un schéma expérimental permettant de tirer parti de l'efficacité des guides d'onde sur niobate de lithium périodiquement polarisé (PPLN/W) afin de générer, en bande étroite des paires de photons intriqués en polarisation aux longueurs d'ondes des télécommunications (1560 nm). Grâce à un montage original, fiable et basé sur la seule utilisation des composants télécoms, nous montrons la violation des inégalités de Bell avec une visibilité de plus de 97%.

Published
2011

33. Experimental demonstration of frequency-degenerate bright EPR beams with a self-phase-locked optical parametric oscillator

Author

Keller, Gaelle, D'Auria, Virginia, Treps, Nicolas, Coudreau, Thomas, Laurat, Julien, Fabre, Claude, Laboratoire Kastler Brossel (LKB (Jussieu)), Université Pierre et Marie Curie - Paris 6 (UPMC)-Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Matériaux et Phénomènes Quantiques (MPQ (UMR_7162)), Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Kastler Brossel ( LKB (Jussieu) ), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris ( FRDPENS ), École normale supérieure - Paris ( ENS Paris ) -Centre National de la Recherche Scientifique ( CNRS ) -École normale supérieure - Paris ( ENS Paris ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Centre National de la Recherche Scientifique ( CNRS ), Matériaux et Phénomènes Quantiques ( MPQ ), Université Paris Diderot - Paris 7 ( UPD7 ) -Centre National de la Recherche Scientifique ( CNRS ), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Quantum Physics, [ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph], [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], Physics::Optics, FOS: Physical sciences, Quantum Physics (quant-ph)
Abstract

We report the first experimental observation of bright EPR beams produced by a type-II optical parametric oscillator operating above threshold at frequency degeneracy. The degenerate operation is obtained by introducing a birefringent plate inside the cavity resulting in phase locking. After filtering the pump noise, which plays a critical role, continuous-variable EPR correlations between the orthogonally polarized signal and idler beams are demonstrated.

Published
2008
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34. Dynamics and Behaviour of Triply Resonant OPOs below the threshold

Author

D'Auria, Virginia

Abstract

Nella tesi è discusso il comportamento degli oscillatori ottici parametrici (OPO) come sorgenti di luce non classica. La prima parte è dedicata allo studio e alla realizzazione di un “OPO degenere” in grado di emettere radiazione con fluttuazioni sulla fase del campo elettrico al di sotto del limite classico (vuoto squeezed). L’uscita dell’OPO è analizzata in funzione di diversi parametri (ampiezza del fascio di pompa, perdita extra e detuning della cavità). Sono riportati i risultati sperimentali relativi alla rivelazione ed un modello teorico in grado di spiegarne l’andamento. E’ proposto e testato sperimentalmente uno schema sull’ uso di vuoto squeezed in misure di assorbimento a basso numero di fotoni. La seconda parte della tesi è dedicata allo studio ed alla realizzazione di un “OPO non degenere” (NOPO) per la generazione di fasci correlati quantisticamente. E’ proposto uno schema teorico in grado di fornire una caratterizzazione completa della correlazione tra i fasci tramite la matrice di covarianza. Nell’ultima parte della tesi è discussa la realizzazione sperimentale di un NOPO basato su un cristallo non lineare di tipo poled.

Published
2006

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