Diffraction of a superfluid Fermi gas by an atomic grating

Details Diffraction of a superfluid Fermi gas by an atomic grating Diffraction of a superfluid Fermi gas by an atomic grating

2001-10-08

arxiv.org/abs/cond-mat/0110163v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.88.110401

An atomic grating generated by a pulsed standing wave laser field is proposed to manipulate the superfluid state in a quantum degenerate gas of fermionic atoms. We show that in the presence of atomic Cooper pairs, the density oscillations of the gas caused by the atomic grating exhibit a much longer coherence time than that in the normal Fermi gas. Our result indicates that the technique of a pulsed atomic grating can be a potential candidate to detect the atomic superfluid state in a quantum degenerate Fermi gas.

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