Echo in Optical Lattices: Stimulated Revival of Breathing Oscillations

Details Echo in Optical Lattices: Stimulated Revival of Breathing Oscillations Echo in Optical Lattices: Stimulated Revival of Breathing Oscillations

1997-12-20

arxiv.org/abs/cond-mat/9712254v1

Physics

Condensed Matter

13 pages, 3 figures

Scientific paper

10.1103/PhysRevA.57.3788

We analyze a stimulated revival (echo) effect for the breathing modes of the atomic oscillations in optical lattices. The effect arises from the dephasing due to the weak anharmonicity being partly reversed in time by means of additional parametric excitation of the optical lattice. The shape of the echo response is obtained by numerically simulating the equation of motion for the atoms with subsequent averaging over the thermal initial conditions. A qualitative analysis of the phenomenon shows that the suggested echo mechanism combines the features of both spin and phonon echoes.

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