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Observation of the red-blue detuning asymmetry in matter-wave superradiance

Published

Author(s)

Lu Deng, Edward W. Hagley, Qiang Cao, Xiaorui Wang, Xinyu Luo, Ruquan Wang, Fan Yang, Xiaoji Zhou, Xuzong Chen, M. G. Payne, Mingsheng Zhan

Abstract

We show the first experimental observations of matter-wave superradiance using blue-detuned light, and demonstrate a pump-laser detuning asymmetry in the collective atomic recoil motion. In contrast to all previous theoretical treatments, which predict that the process should be symmetric with respect to the sign of the pump laser detuning, we find that for sufficiently high atomic densities the symmetry is broken. However, in the limit of a dilute atomic gas the symmetry is restored. With high atomic densities and a red-detuned pump laser, the usual distinctive multi-order matterwave scattering pattern is clearly visible, whereas with blue-detuned light the collective atom recoil motion is strongly suppressed.
Citation
Physical Review Letters
Volume
105
Issue
22

Keywords

Bose-Einstein condensation, detuning assymetry, matter-waves, superradiance

Citation

Deng, L. , Hagley, E. , Cao, Q. , Wang, X. , Luo, X. , Wang, R. , Yang, F. , Zhou, X. , Chen, X. , , M. and Zhan, M. (2010), Observation of the red-blue detuning asymmetry in matter-wave superradiance, Physical Review Letters, [online], https://doi.org/10.1103/PhysRevLett.105.220404 (Accessed June 19, 2024)

Issues

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Created November 23, 2010, Updated November 10, 2018