Search Results - "Abgrall, M."

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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A clock network for geodesy and fundamental science by Lisdat, C., Grosche, G., Quintin, N., Shi, C., Raupach, S.M.F., Grebing, C., Nicolodi, D., Stefani, F., Al-Masoudi, A., Dörscher, S., Häfner, S., Robyr, J.-L., Chiodo, N., Bilicki, S., Bookjans, E., Koczwara, A., Koke, S., Kuhl, A., Wiotte, F., Meynadier, F., Camisard, E., Abgrall, M., Lours, M., Legero, T., Schnatz, H., Sterr, U., Denker, H., Chardonnet, C., Le Coq, Y., Santarelli, G., Amy-Klein, A., Le Targat, R., Lodewyck, J., Lopez, O, Pottie, P.-E.

“…Leveraging the unrivalled performance of optical clocks as key tools for geo-science, for astronomy and for fundamental physics beyond the standard model…”
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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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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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New limits on the drift of fundamental constants from laboratory measurements by FISCHER, M, KOLACHEVSKY, N, MARION, H, DOS SANTOS, F. Pereira, LEMONDE, P, SANTARELLI, G, LAURENT, P, CLAIRON, A, SALOMON, C, HAAS, M, JENTSCHURA, U. D, KEITEL, C. H, ZIMMERMANN, M, HOLZWARTH, R, UDEM, Th, HÄNSCH, T. W, ABGRALL, M, GRÜNERT, J, MAKSIMOVIC, I, BIZE, S

“…We have remeasured the absolute 1S-2S transition frequency nu(H) in atomic hydrogen. A comparison with the result of the previous measurement performed in 1999…”
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Search for variations of fundamental constants using atomic fountain clocks by Marion, H, Pereira Dos Santos, F, Abgrall, M, Zhang, S, Sortais, Y, Bize, S, Maksimovic, I, Calonico, D, Grünert, J, Mandache, C, Lemonde, P, Santarelli, G, Laurent, Ph, Clairon, A, Salomon, C

“…Over five years, we have compared the hyperfine frequencies of 133Cs and 87Rb atoms in their electronic ground state using several laser-cooled 133Cs and 87Rb…”
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Mid-infrared laser phase-locking to a remote near-infrared frequency reference for high-precision molecular spectroscopy by Chanteau, B, Lopez, O, Zhang, W, Nicolodi, D, Argence, B, Auguste, F, Abgrall, M, Chardonnet, C, Santarelli, G, Darquié, B, Le Coq, Y, Amy-Klein, A

“…We present a method for accurate mid-infrared frequency measurements and stabilization to a near-infrared ultra-stable frequency reference, transmitted with a…”
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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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Near- to mid-IR spectral purity transfer with a tunable frequency comb: Methanol frequency metrology over a 1.4 GHz span by Tran, D. B. A., Lopez, O., Manceau, M., Goncharov, A., Abgrall, M., Alvarez-Martinez, H., Le Targat, R., Cantin, E., Pottie, P.-E., Amy-Klein, A., Darquié, B.

“…We report the upgrade and operation of a frequency-comb-assisted high-resolution mid-infrared molecular spectrometer, allowing us to combine high spectral…”
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Measurement of the hydrogen 1S- 2S transition frequency by phase coherent comparison with a microwave cesium fountain clock by Niering, M, Holzwarth, R, Reichert, J, Pokasov, P, Udem, T, Weitz, M, Hansch, TW, Lemonde, P, Santarelli, G, Abgrall, M, Laurent, P, Salomon, C, Clairon, A

“…We report on an absolute frequency measurement of the hydrogen 1S-2S two-photon transition in a cold atomic beam with an accuracy of 1.8 parts in 10(14). Our…”
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Design of the cold atom PHARAO space clock and initial test results by LAURENT, P. H, ABGRALL, M, VEGA, J. F, GROSJEAN, O, PICARD, F, SACCOCCIO, M, CHAUBET, M, LADIETTE, N, GUILLET, L, ZENONE, I, DELAROCHE, C. H, SIRMAIN, C. H, JENTSCH, C. H, LEMONDE, P, SANTARELLI, G, CLAIRON, A, MAKSIMOVIC, I, BIZE, S, SALOMON, C. H, BLONDE, D

“…In this paper we describe the cold atom clock PHARAO, designed for microgravity operation. All elements of the PHARAO engineering model have been manufactured…”
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BNM-SYRTE fountains: recent results by Vian, C., Rosenbusch, P., Marion, H., Bize, S., Cacciapuoti, L., Zhang, S., Abgrall, M., Chambon, D., Maksimovic, I., Laurent, P., Santarelli, G., Clairon, A., Luiten, A., Tobar, M., Salomon, C.

“…Recent improvements of Bureau National de Me/spl acute/trologie Syste/spl grave/mes de Re/spl acute/fe/spl acute/rence Temps Espace (BNM-SYRTE) fountains FO1…”
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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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A New Approach for Absolute Calibration of a GNSS Receiver: Use of a Software-Defined Radio (SDR) Technique by Uhrich, P., Riedel, F., Chupin, B., Abgrall, M.

“…SummaryThis paper describes a new approach for achieving absolute calibration of the receiver main unit of a GNSS station, based on the use of an affordable…”
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A direct comparison between two independently calibrated time transfer techniques: T2L2 and GPS common-views by Rovera, G. D., Abgrall, M., Courde, C., Exertier, P., Fridelance, P., Guillemot, Ph, Laas-Bourez, M., Martin, N., Samain, E., Sherwood, R., Torre, J-M, Uhrich, P.

“…This paper presents a direct comparison of two time transfer techniques on independently calibrated links: Time Transfer by Laser Link (T2L2) and Global…”
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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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Cold Atom Clocks by Sortais, Y, Bize, S, Abgrall, M, Zhang, S, Nicolas, C, Mandache, C, Lemonde, P, Laurent, P, Santarelli, G, Dimarcq, N, Petit, P, Clairon, A, Mann, A, Luiten, A, Chang, S, Salomon, C

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High Precision, SI-traceable, Mid-Infrared Molecular Spectroscopy by Cahuzac, N., Liu, Y., Saffre, M., Cantin, E., Lopez, O., Tran, D.B.A., Santagata, R., Manceau, M., Amy-Klein, A., Darquie, B., Tonnes, M., Pointard, B., Abgrall, M., Lorini, L., Le Coq, Y., Le Targat, R., Alvarez-Martinez, H., Xu, D., Pottie, P.-E.

“…SummaryWe present SI-traceable mid-infrared high-resolution saturated absorption spectroscopy measurements conducted on methanol. Resolutions of few hundreds…”
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Interindividual variations in beliefs about the placebo effect: a study in 300 rheumatology inpatients and 100 nurses by Berthelot, Jean-Marie, Maugars, Yves, Abgrall, Monique, Prost, Alain

“…Patients and methods. Three hundred patients admitted to a rheumatology department (mean age, 49.2 ± 15.5 years) and 100 nurses working in the same teaching…”
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