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23 results on '"Bodart, Quentin"'

1. Coherent control of a single trapped Rydberg ion

Author

Higgins, Gerard, Pokorny, Fabian, Zhang, Chi, Bodart, Quentin, and Hennrich, Markus

Subjects
Quantum Physics, Physics - Atomic Physics
Abstract

Trapped Rydberg ions are a promising novel approach to quantum computing and simulations. They are envisaged to combine the exquisite control of trapped ion qubits with the fast two-qubit Rydberg gates already demonstrated in neutral atom experiments. Coherent Rydberg excitation is a key requirement for these gates. Here, we carry out the first coherent Rydberg excitation of an ion and perform a single-qubit Rydberg gate, thus demonstrating basic elements of a trapped Rydberg ion quantum computer., Comment: 4 pages and 4 figures in the main body, 6 pages and 5 figures in total

Published
2017
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2. A single strontium Rydberg ion confined in a Paul trap

Author

Higgins, Gerard, Li, Weibin, Pokorny, Fabian, Zhang, Chi, Kress, Florian, Maier, Christine, Haag, Johannes, Bodart, Quentin, Lesanovsky, Igor, and Hennrich, Markus

Subjects
Quantum Physics, Physics - Atomic Physics, Physics - Optics
Abstract

Trapped Rydberg ions are a promising new system for quantum information processing. They have the potential to join the precise quantum operations of trapped ions and the strong, long-range interactions between Rydberg atoms. Technically, the ion trap will need to stay active while exciting the ions into the Rydberg state, else the strong Coulomb repulsion will quickly push the ions apart. Thus, a thorough understanding of the trap effects on Rydberg ions is essential for future applications. Here we report the observation of two fundamental trap effects. First, we investigate the interaction of the Rydberg electron with the quadrupolar electric trapping field. This effect leads to Floquet sidebands in the spectroscopy of Rydberg D-states whereas Rydberg S-states are unaffected due to their symmetry. Second, we report on the modified trapping potential in the Rydberg state compared to the ground state which results from the strong polarizability of the Rydberg ion. We observe the resultant energy shifts as a line broadening which can be suppressed by cooling the ion to the motional ground state in the directions orthogonal to the excitation laser.

Published
2016
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3. A cold atom pyramidal gravimeter with a single laser beam

Author

Bodart, Quentin, Merlet, Sébastien, Malossi, Nicola, Santos, Franck Pereira Dos, Bouyer, Philippe, and Landragin, Arnaud

Subjects
Physics - Atomic Physics
Abstract

We demonstrate a scheme for realizing a compact cold atom gravimeter. The use of a hollow pyramidal configuration allows to achieve all functions: trapping, interferometer and detection with a unique laser beam leading to a drastic reduction in complexity and volume. In particular, we demonstrate a relative sensitivity to acceleration of gravity (g) of 1.7 x 10-7 at one second, with a moderate laser power of 50 mW. This simple geometry combined to such a high sensitivity opens wide perspectives for practical applications (P. Bouyer and A. Landragin, patent number FR2009/000252, 2009).

Published
2010
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4. Double diffraction in an atomic gravimeter

Author

Malossi, Nicola, Bodart, Quentin, Merlet, Sébastien, Lévèque, Thomas, Landragin, Arnaud, and Santos, Franck Pereira Dos

Subjects
Physics - Atomic Physics
Abstract

We demonstrate the realization of a new scheme for cold atom gravimetry based on the use of double diffraction beamsplitters recently demonstrated in \cite{Leveque}, where the use of two retro-reflected Raman beams allows symmetric diffraction in $\pm \hbar k_{eff}$ momenta. Though in principle restricted to the case of zero Doppler shift, for which the two pairs of Raman beams are simultaneously resonant, we demonstrate that such diffraction pulses can remain efficient on atoms with non zero velocity, such as in a gravimeter, when modulating the frequency of one of the two Raman laser sources. We use such pulses to realize an interferometer insensitive to laser phase noise and some of the dominant systematics. This reduces the technical requirements and would allow the realization of a simple atomic gravimeter. We demonstrate a sensitivity of $1.2\times10^{-7}g$ per shot.

Published
2009
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5. Operating an atom interferometer beyond its linear range

Author

Merlet, Sébastien, Gouët, J. Le, Bodart, Quentin, Clairon, Andre, Landragin, Arnaud, Santos, Franck Pereira Dos, and Rouchon, Pierre

Subjects
Physics - Atomic Physics
Abstract

In this paper, we show that an atom interferometer inertial sensor, when associated to the auxiliary measurement of external vibrations, can be operated beyond its linear range and still keep a high acceleration sensitivity. We propose and compare two measurement procedures (fringe fitting and nonlinear lock) that can be used to extract the mean phase of the interferometer when the interferometer phase fluctuations exceed $2\pi$. Despite operating in the urban environment of inner Paris without any vibration isolation, the use of a low noise seismometer for the measurement of ground vibrations allows our atom gravimeter to reach at night a sensitivity as good as $5.5\times10^{-8}$g at 1 s. Robustness of the measurement to large vibration noise is also demonstrated by the ability of our gravimeter to operate during an earthquake with excellent sensitivity. Our high repetition rate allows for recovering the true low frequency seismic vibrations, ensuring proper averaging. Such techniques open new perspectives for applications in other fields, such as navigation and geophysics., Comment: 20 pages, 8 figures

Published
2008
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7. Single Strontium Rydberg Ion Confined in a Paul Trap

Author

Higgins, Gerard, Li, Weibin, Pokorny, Fabian, Zhang, Chi, Kress, Florian, Maier, Christine, Haag, Johannes, Bodart, Quentin, Lesanovsky, Igor, Hennrich, Markus, Higgins, Gerard, Li, Weibin, Pokorny, Fabian, Zhang, Chi, Kress, Florian, Maier, Christine, Haag, Johannes, Bodart, Quentin, Lesanovsky, Igor, and Hennrich, Markus

Abstract

Trapped Rydberg ions are a promising new system for quantum information processing. They have the potential to join the precise quantum operations of trapped ions and the strong, long-range interactions between Rydberg atoms. Combining the two systems is not at all straightforward. Rydberg atoms are severely affected by electric fields which may cause Stark shifts and field ionization, while electric fields are used to trap ions. Thus, a thorough understanding of the physical properties of Rydberg ions due to the trapping electric fields is essential for future applications. Here, we report the observation of two fundamental trap effects. First, we investigate the interaction of the Rydberg electron with the trapping electric quadrupole fields which leads to Floquet sidebands in the excitation spectra. Second, we report on the modified trapping potential in the Rydberg state compared to the ground state that results from the strong polarizability of the Rydberg ion. By controlling both effects we observe resonance lines close to their natural linewidth demonstrating an unprecedented level of control of this novel quantum platform.

Published
2017
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8. Single Strontium Rydberg Ion Confined in a Paul Trap

Author

Higgins, Gerard, primary, Li, Weibin, additional, Pokorny, Fabian, additional, Zhang, Chi, additional, Kress, Florian, additional, Maier, Christine, additional, Haag, Johannes, additional, Bodart, Quentin, additional, Lesanovsky, Igor, additional, and Hennrich, Markus, additional

Published
2017
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9. Coherent rydberg excitation of a single trapped ion

Author

Higgins, Gerard, primary, Pokorny, Fabian, additional, Zhang, Chi, additional, Bodart, Quentin, additional, Kress, Florian, additional, Maier, Christine, additional, Haag, Johannes, additional, Li, Weibin, additional, Lesanovsky, Igor, additional, and Hennrich, Markus, additional

Published
2017
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10. Atom gravimetry: Improvement of accuracy and new geometries

Author

Bodart, Quentin, Bodart, Quentin, Systèmes de Référence Temps Espace (SYRTE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, 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 VI, and Philip Tuckey

Subjects
gravimètre atomes froids interféromètre exactitude pesanteur, [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], [PHYS.PHYS.PHYS-ATOM-PH] Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], gravimeter cold atoms interferometer accuracy gravity
Abstract

The goal of the absolute gravimeter is to measure the gravitational accelration with a relative accuracy of 10-9 for the metrological "watt balance" project. During my thesis, we developped a new vaccum chamber, which allowed us to evaluate the limiting systematic errors. The gravimeter was made transportable and was installed close to the LNE watt balance. The gravimeter uses atom interferometry, where a cold cloud of 87Rb atoms in free fall is manipulated thanks to two-photon transitions. We reduced the measurement uncertainty below the goal, except for laser wavefront aberation effects. This is currently under investigations and we aim for perfect control of the atomic trajectories. During the year 2010, our atomic gravimeter participated in international "Key" comparisons. The results we obtained are in agreement with other gravimeters, but we observed some fluctuations in the differences with other gravimeters, caused by variations of the wavefront aberration effects. In parallel, we developed three new methods of atom interferometry measurement. The first method uses a three-point algorithm which makes the measurement robust from vibrations. The second consists in diffracting atoms simultaneously by the four fields present in the chamber, in order to double the area of the interferometer, and thus increases its intrinsic sensitivity. Last, we designed and characterized a hollow pyramid, which allows the differents lasers to be replaced by a single laser beam, in order to create a compact transportable atomic gravimeter., L'objectif du gravimètre absolu est de déterminer la valeur de l'accélération de pesanteur g avec une incertitude relative de 10-9 pour le projet métrologique de "balance du watt". Nous avons développé pendant ma thèse une nouvelle enceinte à vide permettant l'évaluation des effets systématiques limitant. Le gravimètre a été rendu transportable et placé à côté de la balance du LNE. Le gravimètre repose sur des techniques d'interférométrie atomique, où un nuage d'atomes froids de 87Rb en chute libre est manipulé au moyen de transitions à deux photons. Nous avons réduit l'incertitude sur l'ensemble des biais au-dessous de l'objectif, excepté l'effet des aberrations du front d'onde des faisceaux lasers. Il est actuellement l'objet de nos investigations et nous cherchons à contrôler le mieux possible la trajectoire des atomes. Au cours de l'année 2010, notre gravimètre atomique a participé à des comparaisons "clefs" internationales. Les valeurs de g obtenues sont en accord, mais nous relevons des fluctuations de l'écart avec les autres gravimètres, liées en partie aux variations de l'effet d'aberration. Nous avons développé en parallèle trois nouvelles techniques de mesures d'interférométrie atomique. La première utilise un algorithme à trois coups qui rend la mesure robuste aux vibrations. La seconde consiste à diffracter les atomes simultanément au moyen des quatre champs présents dans l'enceinte à vide afin de doubler l'aire de l'interféromètre et donc sa sensibilité intrinsèque. Enfin nous avons conçu et caractérisé une pyramide creuse, qui permet de substituer aux différents lasers un unique large faisceau, afin de créer un gravimètre atomique transportable compact.

Published
2010

11. Free fall acceleration determination for the LNE watt balance

Author

Merlet, Sébastien, Gillot, Pierre, Farah, Tristan, Bodart, Quentin, Le Gouët, Julien, Cheinet, Patrick, Guerlin, Christine, Louchet-Chauvet, Anne, Malossi, Nicola, Kopaev, Alexander, Francis, Olivier, d'Agostino, Giancarlo, Diament, Michel, Geneves, Gérard, Clairon, André, Landragin, Arnaud, Pereira dos Santos, Franck, Laboratoire national de métrologie et d'essais - Systèmes de Référence Temps-Espace (LNE - SYRTE), Systèmes de Référence Temps Espace (SYRTE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, 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)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Dipartimento di Fisica, Università di Firenze (Dipartimento di Fisica, Università di Firenze), Università degli Studi di Firenze = University of Florence [Firenze] (UNIFI), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), DEMR, ONERA, Université Paris Saclay (COmUE) [Palaiseau], ONERA-Université Paris Saclay (COmUE), DOTA, ONERA, Université Paris Saclay (COmUE) [Palaiseau], Laboratoire Aimé Cotton (LAC), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École normale supérieure - Cachan (ENS Cachan), Laboratoire Kastler Brossel (LKB (Lhomond)), 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), School of Science and Technology [Camerino], Università degli Studi di Camerino (UNICAM), Sternberg Astronomical Institute [Moscow], Lomonosov Moscow State University (MSU), University of Luxembourg [Luxembourg], Istituto Nazionale di Ricerca Metrologica (INRiM), Institut de Physique du Globe de Paris (IPGP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS), Laboratoire National de Métrologie et d'Essais [Trappes] (LNE ), Dipartimento di Fisica e Astronomia [Firenze], Università degli Studi di Firenze = University of Florence (UniFI), École normale supérieure - Cachan (ENS Cachan)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), 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), 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), Università degli Studi di Camerino = University of Camerino (UNICAM), and Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], WATT BALANCE, GRAVITY MODEL, GRAVIMETRY, GRAVITY MAPPING, ATOMIC INTERFEROMETRY
Abstract

International audience; The "watt balance" project aims at linking the kilogram definition to the Planck constant. The weighing of the mass involved requires a determination of the acceleration g with an uncertainty better than 10 −8. This work aims at determining g with an atomic gravimeter and a dedicated gravimetric site.; Le projet « balance du watt » propose de relier la définition du kilogramme à la constante de Planck. La pesée de la masse impliquée nécessite une détermination de l'accélération de la pesanteur g avec une exactitude meilleure que 10^−8. Les travaux résumés dans cet article visent à réaliser cette détermination à l'aide d'un gravimètre atomique et d'un site gravimétrique dédié.

Published
2014

12. Détermination de l'accélération de la pesanteur pour la balance du watt du LNE

Author

Merlet, Sébastien, Gillot, Pierre, Farah, Tristan, Bodart, Quentin, Le Gouet, Julien, Cheinet, Patrick, Guerlin, Christine, Louchet-Chauvet, Anne, Malossi, Nicola, Kopaev, Alexander, Francis, Olivier, D'Agostino, Giancarlo, Diament, Michel, Geneves, Gérard, Clairon, André, Landragin, Arnaud, and Pereira Dos Santos, Franck

Subjects
gravity model, Earth sciences & physical geography [G02] [Physical, chemical, mathematical & earth Sciences], gravity mapping, Physique [G04] [Physique, chimie, mathématiques & sciences de la terre], Sciences de la terre & géographie physique [G02] [Physique, chimie, mathématiques & sciences de la terre], Physics [G04] [Physical, chemical, mathematical & earth Sciences], atomic interferometry, watt balance, gravimetry
Abstract

The “watt balance” project aims at linking the kilogram definition to the Planck constant. The weighing of the mass involved requires a determination of the acceleration g with an uncertainty better than 10-8. This work aims at determining g with an atomic gravimeter and a dedicated gravimetric site.

Published
2014

13. Accuracy of a cold atom gravimeter

Author

Merlet, Sébastien, Bodart, Quentin, Louchet-Chauvet, Anne, Landragin, Arnaud, Pereira dos Santos, Franck, Systèmes de Référence Temps Espace (SYRTE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Interférométrie Atomique et Capteurs Inertiels, Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

International audience

Published
2010

14. SHORT COMMUNICATION: Comparison between two mobile absolute gravimeters: optical versus atomic interferometers

Author

Merlet, Sébastien, Bodart, Quentin, Malossi, Nicola, Landragin, Arnaud, Pereira dos Santos, Franck, Gitlein, Olga, Timmen, Ludger, Systèmes de Référence Temps Espace (SYRTE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Interférométrie Atomique et Capteurs Inertiels, Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), and Institut für Erdmessung, Leibniz Universität Hannover

Subjects
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

International audience; We report a comparison between two absolute gravimeters: the LNE-SYRTE cold atom gravimeter and FG5#220 of Leibniz Universität of Hannover. They rely on different principles of operation: atomic and optical interferometry. Both are movable which enabled them to participate in the last International Comparison of Absolute Gravimeters (ICAG'09) at BIPM. Immediately after, their bilateral comparison took place in the LNE watt balance laboratory and showed an agreement of (4.3 ± 6.4) µGal.

Published
2010

16. Final report of key comparison CCM.G-K1: International comparison of absolute gravimeters ICAG2009

Author

Arias, E Felicitas, primary, Jiang, Zhiheng, additional, Robertsson, Lennart, additional, Vitushkin, Leonid, additional, Ruess, Diethard, additional, Ullrich, Christian, additional, Inglis, Dave, additional, Liard, Jacques, additional, Robinson, Ian, additional, Ji, Wangxi, additional, Shuqing, Wu, additional, Lee, Chiungwu, additional, Palinkas, Vojtech, additional, Mäkinen, Jaakko, additional, Pereira Dos Santos, Franck, additional, Bodart, Quentin, additional, Merlet, Sébastien, additional, Mizushima, Shigeki, additional, Choi, In-Mook, additional, Baumann, Henri, additional, and Karaböce, Baki, additional

Published
2012
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20. Single strontium Rydberg ion confined in a Paul trap

Author

Higgins, Gerard, Li, Weibin, Pokorny, Fabian, Zhang, Chi, Kress, Florian, Maier, Christiane, Haag, Johannes, Bodart, Quentin, Lesanovsky, Igor, Hennrich, Markus, Higgins, Gerard, Li, Weibin, Pokorny, Fabian, Zhang, Chi, Kress, Florian, Maier, Christiane, Haag, Johannes, Bodart, Quentin, Lesanovsky, Igor, and Hennrich, Markus

Abstract

Trapped Rydberg ions are a promising new system for quantum information processing. They have the potential to join the precise quantum operations of trapped ions and the strong, long-range interactions between Rydberg atoms. Combining the two systems is not at all straightforward. Rydberg atoms are severely affected by electric fields which may cause Stark shifts and field ionization, while electric fields are used to trap ions. Thus, a thorough understanding of the physical properties of Rydberg ions due to the trapping electric fields is essential for future applications. Here we report the observation of two fundamental trap effects. First, we investigate the interaction of the Rydberg electron with the trapping electric quadrupole fields which leads to Floquet sidebands in the excitation spectra. Second, we report on the modified trapping potential in the Rydberg state compared to the ground state which results from the strong polarizability of the Rydberg ion. By controlling both effects we observe resonance lines close to their natural linewidth demonstrating an unprecedented level of control of this novel quantum platform.

21. Single strontium Rydberg ion confined in a Paul trap

Author

Higgins, Gerard, Li, Weibin, Pokorny, Fabian, Zhang, Chi, Kress, Florian, Maier, Christiane, Haag, Johannes, Bodart, Quentin, Lesanovsky, Igor, Hennrich, Markus, Higgins, Gerard, Li, Weibin, Pokorny, Fabian, Zhang, Chi, Kress, Florian, Maier, Christiane, Haag, Johannes, Bodart, Quentin, Lesanovsky, Igor, and Hennrich, Markus

Abstract

Trapped Rydberg ions are a promising new system for quantum information processing. They have the potential to join the precise quantum operations of trapped ions and the strong, long-range interactions between Rydberg atoms. Combining the two systems is not at all straightforward. Rydberg atoms are severely affected by electric fields which may cause Stark shifts and field ionization, while electric fields are used to trap ions. Thus, a thorough understanding of the physical properties of Rydberg ions due to the trapping electric fields is essential for future applications. Here we report the observation of two fundamental trap effects. First, we investigate the interaction of the Rydberg electron with the trapping electric quadrupole fields which leads to Floquet sidebands in the excitation spectra. Second, we report on the modified trapping potential in the Rydberg state compared to the ground state which results from the strong polarizability of the Rydberg ion. By controlling both effects we observe resonance lines close to their natural linewidth demonstrating an unprecedented level of control of this novel quantum platform.

22. Single strontium Rydberg ion confined in a Paul trap

Author

Higgins, Gerard, Li, Weibin, Pokorny, Fabian, Zhang, Chi, Kress, Florian, Maier, Christiane, Haag, Johannes, Bodart, Quentin, Lesanovsky, Igor, Hennrich, Markus, Higgins, Gerard, Li, Weibin, Pokorny, Fabian, Zhang, Chi, Kress, Florian, Maier, Christiane, Haag, Johannes, Bodart, Quentin, Lesanovsky, Igor, and Hennrich, Markus

Abstract

Trapped Rydberg ions are a promising new system for quantum information processing. They have the potential to join the precise quantum operations of trapped ions and the strong, long-range interactions between Rydberg atoms. Combining the two systems is not at all straightforward. Rydberg atoms are severely affected by electric fields which may cause Stark shifts and field ionization, while electric fields are used to trap ions. Thus, a thorough understanding of the physical properties of Rydberg ions due to the trapping electric fields is essential for future applications. Here we report the observation of two fundamental trap effects. First, we investigate the interaction of the Rydberg electron with the trapping electric quadrupole fields which leads to Floquet sidebands in the excitation spectra. Second, we report on the modified trapping potential in the Rydberg state compared to the ground state which results from the strong polarizability of the Rydberg ion. By controlling both effects we observe resonance lines close to their natural linewidth demonstrating an unprecedented level of control of this novel quantum platform.

23. Single strontium Rydberg ion confined in a Paul trap

Author

Higgins, Gerard, Li, Weibin, Pokorny, Fabian, Zhang, Chi, Kress, Florian, Maier, Christiane, Haag, Johannes, Bodart, Quentin, Lesanovsky, Igor, Hennrich, Markus, Higgins, Gerard, Li, Weibin, Pokorny, Fabian, Zhang, Chi, Kress, Florian, Maier, Christiane, Haag, Johannes, Bodart, Quentin, Lesanovsky, Igor, and Hennrich, Markus

Abstract

Trapped Rydberg ions are a promising new system for quantum information processing. They have the potential to join the precise quantum operations of trapped ions and the strong, long-range interactions between Rydberg atoms. Combining the two systems is not at all straightforward. Rydberg atoms are severely affected by electric fields which may cause Stark shifts and field ionization, while electric fields are used to trap ions. Thus, a thorough understanding of the physical properties of Rydberg ions due to the trapping electric fields is essential for future applications. Here we report the observation of two fundamental trap effects. First, we investigate the interaction of the Rydberg electron with the trapping electric quadrupole fields which leads to Floquet sidebands in the excitation spectra. Second, we report on the modified trapping potential in the Rydberg state compared to the ground state which results from the strong polarizability of the Rydberg ion. By controlling both effects we observe resonance lines close to their natural linewidth demonstrating an unprecedented level of control of this novel quantum platform.

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