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- Centre National de la Recherche ScientifiqueFR526 papers
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11 papers · 2 filters
Tapered-amplified AR-coated laser diodes for Potassium and Rubidium atomic-physics experiments
Robert A. Nyman, Gael Varoquaux, Brice Villier +5
We present a system of room-temperature extended-cavity grating-diode lasers (ECDL) for production of light in the range 760-790nm. The extension of the tuning range towards the bl…
Observations of density fluctuations in an elongated Bose gas: ideal gas and quasi-condensate regimes
Jerome Esteve, Jean-Baptiste Trebbia, Thorsten Schumm +3
We report in situ measurements of density fluctuations in a quasi one dimensional Bose gas at thermal equilibrium in an elongated harmonic trap. We observe an excess of fluctuation…
Inhibition of Transport of a Bose-Einstein Condensate in a Random Potential
Jocelyn Retter, Andres F. Varon, David Clément +6
We observe the suppression of the 1D transport of an interacting elongated Bose-Einstein condensate in a random potential with a standard deviation small compared to the typical en…
Single-photon emission in the near infrared from diamond colour centre
E Wu, V. Jacques, F. Treussart +3
Optically active colour centres based on Nickel-Nitrogen impurities are observed in natural diamond under continuous-wave excitation. The spectral analysis shows that the single em…
Beam quality of a non-ideal atom laser
J. -F. Riou, W. Guerin, Y. Le Coq +4
We study the propagation of a non-interacting atom laser distorted by the strong lensing effect of the Bose-Einstein Condensate (BEC) from which it is outcoupled. We observe a tran…
Hanbury Brown Twiss effect for ultracold quantum gases
M. Schellekens, R. Hoppeler, A. Perrin +4
We have studied 2-body correlations of atoms in an expanding cloud above and below the Bose-Einstein condensation threshold. The observed correlation function for a thermal cloud s…