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Start Over Author "D'Auria, Virginia" Topic quantum communication
8 results on '"D'Auria, Virginia"'

1. 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

2. 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

3. 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

4. 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

5. What are the priorities and the points to be addressed by a legal framework for quantum technologies?

Author

D'Auria, Virginia and Teller, Marina Z.

Subjects
COMMERCIAL trusts, PUBLIC key cryptography, DISRUPTIVE innovations, DATA privacy, TECHNOLOGICAL innovations, QUANTUM communication, CHILDREN of military personnel
Abstract

The article discusses the need for a legal framework for quantum technologies (QTechs) due to their potential revolutionary effects in scientific, technological, and commercial areas. The rapid progress of QTechs requires regulations that can anticipate challenges and prevent detrimental uses of the technology. The article highlights potential risks associated with QTechs, including increased inequality, data privacy and security concerns, geopolitical risks, and the need for standards. The authors call for discussions on the potential stakes and risks of QTechs and how to develop an appropriate regulatory framework. [Extracted from the article]

Published
2023
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6. 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

7. 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

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

Author

Ngah, Lutfi Arif, Alibart, Olivier, Labonté, Laurent, D'Auria, Virginia, and Tanzilli, Sébastien

Subjects
PHOTONS, WAVEGUIDES, QUANTUM communication, OPTICAL communications, TELECOMMUNICATION
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 one of the best measured values reported to date for heralding rates in the MHz regime. These performances, associated with a device-like configuration, are key ingredients for both fast and secure quantum communication protocols. [ABSTRACT FROM AUTHOR]

Published
2015
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