Search Results - "Abgrall, Michel"

New Measurement of the 1S-3S Transition Frequency of Hydrogen: Contribution to the Proton Charge Radius Puzzle by Fleurbaey, Hélène, Galtier, Sandrine, Thomas, Simon, Bonnaud, Marie, Julien, Lucile, Biraben, François, Nez, François, Abgrall, Michel, Guéna, Jocelyne

“…We present a new measurement of the 1S-3S two-photon transition frequency of hydrogen, realized with a continuous-wave excitation laser at 205 nm on a…”
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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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Improved measurement of the hydrogen 1S-2S transition frequency by Parthey, Christian G, Matveev, Arthur, Alnis, Janis, Bernhardt, Birgitta, Beyer, Axel, Holzwarth, Ronald, Maistrou, Aliaksei, Pohl, Randolf, Predehl, Katharina, Udem, Thomas, Wilken, Tobias, Kolachevsky, Nikolai, Abgrall, Michel, Rovera, Daniele, Salomon, Christophe, Laurent, Philippe, Hänsch, Theodor W

“…We have measured the 1S-2S transition frequency in atomic hydrogen via two-photon spectroscopy on a 5.8 K atomic beam. We obtain f(1S-2S) =…”
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Precision measurement of the hydrogen 1S-2S frequency via a 920-km fiber link by Matveev, Arthur, Parthey, Christian G, Predehl, Katharina, Alnis, Janis, Beyer, Axel, Holzwarth, Ronald, Udem, Thomas, Wilken, Tobias, Kolachevsky, Nikolai, Abgrall, Michel, Rovera, Daniele, Salomon, Christophe, Laurent, Philippe, Grosche, Gesine, Terra, Osama, Legero, Thomas, Schnatz, Harald, Weyers, Stefan, Altschul, Brett, Hänsch, Theodor W

“…We have measured the frequency of the extremely narrow 1S-2S two-photon transition in atomic hydrogen using a remote cesium fountain clock with the help of a…”
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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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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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Absolute Frequency Measurement of the Ca+40 4sS1/22-3dD5/22 Clock Transition by Chwalla, Michael, Benhelm, J., Kim, K., Kirchmair, G., Monz, T., Riebe, M., Schindler, P., Villar, A. S., Hänsel, Wolfgang, Roos, C. F., Blatt, R., Abgrall, Michel, Santarelli, Giorgio, Rovera, Daniele, Laurent, Philippe

“…We report on the first absolute transition frequency measurement at the 10-15 level with a single, laser-cooled Ca+40 ion in a linear Paul trap. For this…”
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Quantum cascade laser frequency stabilization at the sub-Hz level by Argence, Bérengère, Chanteau, Bruno, Lopez, Olivier, Nicolodi, Daniele, Abgrall, Michel, Chardonnet, Christian, Daussy, Christophe, Darquié, Benoît, Le Coq, Yann, Amy-Klein, Anne

“…High-precision measurements with molecules may refine our knowledge of various fields of physics, from atmospheric and interstellar physics to the standard…”
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New Measurement of the 1 S − 3 S Transition Frequency of Hydrogen: Contribution to the Proton Charge Radius Puzzle by Fleurbaey, Hélène, Galtier, Sandrine, Thomas, Simon, Bonnaud, Marie, Julien, Lucile, Biraben, François, Nez, François, Abgrall, Michel, Guéna, Jocelyne

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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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High-precision methanol spectroscopy with a widely tunable SI-traceable frequency-comb-based mid-infrared QCL by Santagata, R., Tran, D. B. A., Argence, B., Lopez, O., Tokunaga, S. K., Wiotte, F., Mouhamad, H., Goncharov, A., Abgrall, M., Le Coq, Y., Alvarez-Martinez, H., Le Targat, R., Lee, W. K., Xu, D., Pottie, P.-E., Darquié, B., Amy-Klein, A.

“…There is an increasing demand for precise molecular spectroscopy, in particular in the mid-infrared fingerprint window that hosts a considerable number of…”
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Demonstration of a dual alkali Rb/Cs fountain clock by Guena, Jocelyne, Rosenbusch, Peter, Laurent, Philippe, Abgrall, Michel, Rovera, Daniele, Santarelli, Giorgio, Tobar, Michael E., Bize, Sebastien, Clairon, Andre

“…We report the operation of a dual Rb/Cs atomic fountain clock. 133 Cs and 87 Rb atoms are cooled, launched, and detected simultaneously in LNE-SYRTE's FO2…”
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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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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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Mise en Pratique of the New Kelvin Using Doppler Broadening Thermometry with a Direct Link to the Primary Frequency Standards by Lecordier, Louis, Moufarej, Elias, Kozlova, Olga, Cournol, Anne, Manceau, Mathieu, Tran, Dang Bao An, Cahuzac, Nicolas, Lopez, Olivier, Cantin, Etienne, Abgrall, Michel, Targat, Rodolphe Le, Pottie, Paul-Eric, Martin, Catherine, Briaudeau, Stephan, Amy-Klein, Anne, Daussy, Christophe, Darquie, Benoit

“…We aim to demonstrate the first mise en pratique of the kelvin, within the framework of the new International System of Units (SI), with a direct link to the…”
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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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Precision Measurement of the Hydrogen 1 S − 2 S Frequency via a 920-km Fiber Link by Matveev, Arthur, Parthey, Christian G., Predehl, Katharina, Alnis, Janis, Beyer, Axel, Holzwarth, Ronald, Udem, Thomas, Wilken, Tobias, Kolachevsky, Nikolai, Abgrall, Michel, Rovera, Daniele, Salomon, Christophe, Laurent, Philippe, Grosche, Gesine, Terra, Osama, Legero, Thomas, Schnatz, Harald, Weyers, Stefan, Altschul, Brett, Hänsch, Theodor W.

“…We have measured the frequency of the extremely narrow 1S-2S two-photon transition in atomic hydrogen using a remote cesium fountain clock with the help of a…”
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Invited Review: Progress in atomic fountains at LNE-SYRTE by Guéna, Jocelyne, Abgrall, Michel, Rovera, Daniele, Laurent, Philippe, Chupin, Baptiste, Lours, Michel, Santarelli, Giorgio, Rosenbusch, Peter, Tobar, Michael E., Li, R., Gibble, Kurt, Clairon, André, Bize, Sébastien

“…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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