Phase-sensitive detection of Bragg scattering at 1D optical lattices

Details Phase-sensitive detection of Bragg scattering at 1D optical lattices Phase-sensitive detection of Bragg scattering at 1D optical lattices

2004-10-22

arxiv.org/abs/quant-ph/0410177v1

Physics

Quantum Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.94.193901

We report on the observation of Bragg scattering at 1D atomic lattices. Cold atoms are confined by optical dipole forces at the antinodes of a standing wave generated by the two counter-propagating modes of a laser-driven high-finesse ring cavity. By heterodyning the Bragg-scattered light with a reference beam, we obtain detailed information on phase shifts imparted by the Bragg scattering process. Being deep in the Lamb-Dicke regime, the scattered light is not broadened by the motion of individual atoms. In contrast, we have detected signatures of global translatory motion of the atomic grating.

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