Search Results - "Guena, J."

Testing local position and fundamental constant invariance due to periodic gravitational and boost using long-term comparison of the SYRTE atomic fountains and H-masers by Tobar, M. E., Stanwix, P. L., McFerran, J. J., Guéna, J., Abgrall, M., Bize, S., Clairon, A., Laurent, Ph, Rosenbusch, P., Rovera, D., Santarelli, G.

“…The frequencies of three separate Cs fountain clocks and one Rb fountain clock have been compared to various hydrogen masers to search for periodic changes…”
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Searching for an Oscillating Massive Scalar Field as a Dark Matter Candidate Using Atomic Hyperfine Frequency Comparisons by Hees, A, Guéna, J, Abgrall, M, Bize, S, Wolf, P

“…We use 6 yrs of accurate hyperfine frequency comparison data of the dual rubidium and caesium cold atom fountain FO2 at LNE-SYRTE to search for a massive…”
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High-Stability Comparison of Atomic Fountains Using Two Different Cryogenic Oscillators by Abgrall, M., Guena, J., Lours, M., Santarelli, G., Tobar, M. E., Bize, S., Grop, S., Dubois, B., Fluhr, C., Giordano, V.

“…We present a detailed characterization of two atomic clock interrogation systems based on two different cryogenic sapphire oscillators operated simultaneously…”
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Switching atomic fountain clock microwave interrogation signal and high-resolution phase measurements by Santarelli, G., Governatori, G., Chambon, D., Lours, M., Rosenbusch, P., Guena, J., Chapelet, F., Bize, S., Tobar, M., Laurent, P., Potier, T., Clairon, A.

“…This paper focuses on the development of tools aiming to solve several problems related to the microwave interrogation signal in atomic fountains. We first…”
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Comparing a mercury optical lattice clock with microwave and optical frequency standards by Tyumenev, R, Favier, M, Bilicki, S, Bookjans, E, Targat, R Le, Lodewyck, J, Nicolodi, D, Coq, Y Le, Abgrall, M, Guéna, J, Sarlo, L De, Bize, S

“…In this paper we report the evaluation of an optical lattice clock based on neutral mercury with a relative uncertainty of 1.7 × 10 − 16 . Comparing this…”
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Experimental realization of an optical second with strontium lattice clocks by Le Targat, R., Lorini, L., Le Coq, Y., Zawada, M., Guéna, J., Abgrall, M., Gurov, M., Rosenbusch, P., Rovera, D. G., Nagórny, B., Gartman, R., Westergaard, P. G., Tobar, M. E., Lours, M., Santarelli, G., Clairon, A., Bize, S., Laurent, P., Lemonde, P., Lodewyck, J.

“…Progress in realizing the SI second had multiple technological impacts and enabled further constraint of theoretical models in fundamental physics. Caesium…”
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Continuous beams of cold atoms for space applications by THOMANN, P, PLIMMER, M, DI DOMENICO, G, CASTAGNA, N, GUENA, J, DUDLE, G, FÜZESI, F

“…The precision of atomic state measurements should ideally be limited by irreducible fluctuations associated with the number of atoms available, e.g. shot noise…”
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Improved Tests of Local Position Invariance Using Rb 87 and Cs 133 Fountains by Guéna, J., Abgrall, M., Rovera, D., Rosenbusch, P., Tobar, M. E., Laurent, Ph, Clairon, A., Bize, S.

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Ultralow noise microwave generation with fiber-based optical frequency comb and application to atomic fountain clock by Millo, J., Abgrall, M., Lours, M., English, E. M. L., Jiang, H., Guéna, J., Clairon, A., Tobar, M. E., Bize, S., Le Coq, Y., Santarelli, G.

“…We demonstrate the use of a fiber-based femtosecond laser locked onto an ultrastable optical cavity to generate a low-noise microwave reference signal…”
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Performances of UTC(OP) based on LNE-SYRTE atomic fountains by Rovera, G. D., Abgrall, M., Bize, S., Chupin, B., Guena, J., Laurent, Ph, Rosenbusch, P., Uhrich, P.

“…We present the current realization of UTC(OP) generated at LNE-SYRTE, Observatoire de Paris (OP), Paris, France, which is also the source of French legal time…”
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Measurement of the parity violating 6S-7S transition amplitude in cesium achieved within 2x10{sup -13} atomic-unit accuracy by stimulated-emission detection by Guena, J., Lintz, M., Bouchiat, M.A.

“…We exploit the process of asymmetry amplification by stimulated emission which provides an original method for parity violation (PV) measurements in a highly…”
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New feature in selective reflection with a highly parallel window: phase-tunable homodyne detection of the radiated atomic field by PAPOYAN, A. V, GRIGORYAN, G. G, SHMAVONYAN, S. V, SARKISYAN, D, GUENA, J, LINTZ, M, BOUCHIAT, M. A

“…Selective reflection (SR) of light from a cesium vapor-sapphire interface close to the D-2 resonance line has been studied by use of a sapphire window with…”
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Progress in atomic fountains at LNE-SYRTE by Guena, J., Abgrall, M., Rovera, D., Laurent, P., Chupin, B., Lours, M., Santarelli, G., Rosenbusch, P., Tobar, M. E., Ruoxin Li, Gibble, K., Clairon, A., Bize, S.

“…We give an overview of the work done with the Laboratoire National de Metrologie et d'Essais-Systemes de Reference Temps-Espace (LNE-SYRTE) fountain ensemble…”
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Temperature-tunable sapphire windows for reflection loss-free operation of vapor cells by Jahier, E., Guéna, J., Jacquier, Ph, Lintz, M., Papoyan, A.V., Bouchiat, M.A.

“…We have developed a 'temperature-tunable cell', for which the reflected intensity of a laser beam on a chosen window can be reduced below 0.5% of the incident…”
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Prospects for forbidden-transition spectroscopy and parity violation measurements using a beam of cold stable or radioactive atoms by SANGUINETTI, S, GUENA, J, LINTZ, M, JACQUIER, Ph, WASAN, A, BOUCHIAT, M.-A

“…Laser cooling and trapping offers the possibility of confining a sample of radioactive atoms in free space. Here, we address the question of how best to take…”
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Grooving an alumina surface as a means to inhibit secondary electron emission under grazing incidence by GUENA, J, JAHIER, E, LINTZ, M, PAPOYAN, A, SANGUINETTI, S, BOUCHIAT, M. A

“…We observe charge multiplication of photoemitted electrons in cylindrical alumina cells, containing cesium vapor, submitted to a longitudinal electric field…”
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Pump-probe measurement of atomic parity violation in cesium with a precision of 2.6 by Lintz, M., Guéna, J., Bouchiat, M. -A.

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Corrigendum: Experimental realization of an optical second with strontium lattice clocks by Le Targat, R, Lorini, L, Le Coq, Y, Zawada, M, Guéna, J, Abgrall, M, Gurov, M, Rosenbusch, P, Rovera, D G, Nagórny, B, Gartman, R, Westergaard, P G, Tobar, M E, Lours, M, Santarelli, G, Clairon, A, Bize, S, Laurent, P, Lemonde, P, Lodewyck, J

“…In the legend to Fig. 4c in this Article, references 47 and 48 were incorrectly included in a list of sources for 87 Sr clock frequency measurements. The…”
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New manifestation of atomic parity violation in cesium: a chiral optical gain induced by linearly polarized 6S-7S excitation by Guéna, J, Chauvat, D, Jacquier, Ph, Jahier, E, Lintz, M, Sanguinetti, S, Wasan, A, Bouchiat, M A, Papoyan, A V, Sarkisyan, D

“…We have detected, by using stimulated emission, an atomic parity violation (APV) in the form of a chiral optical gain of a cesium vapor on the 7S-6P(3/2)…”
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Amplification of atomic L-R asymmetries by stimulated emission : experimental demonstration of sensitivity enhancement valuable for parity violation measurements by CHAUVAT, D, GUENA, J, JACQUIER, P, LINTZ, M, BOUCHIAT, M. A

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