Dynamics of Fermionic Four-Wave Mixing

Details Dynamics of Fermionic Four-Wave Mixing Dynamics of Fermionic Four-Wave Mixing

2002-12-16

arxiv.org/abs/cond-mat/0212384v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages, 7 figures

Scientific paper

10.1103/PhysRevA.67.063611

We study the dynamics of a beam of fermions diffracted off a density grating formed by fermionic atoms in the limit of a large grating. An exact description of the system in terms of particle-hole operators is developed. We use a combination of analytical and numerical methods to quantitatively explore the Raman-Nath and the Bragg regimes of diffraction. We discuss the limits in diffraction efficiency resulting from the dephasing of the grating due the distribution of energy states occupied by the fermions. We propose several methods to overcome these limits, including the novel technique of ``atom echoes''.

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