Opto-mechanical measurement of micro-trap on atom chip via nonlinear cavity enhanced Raman scattering spectrum

Details Opto-mechanical measurement of micro-trap on atom chip via nonlinear cavity enhanced Raman scattering spectrum Opto-mechanical measurement of micro-trap on atom chip via nonlinear cavity enhanced Raman scattering spectrum

2012-04-26

arxiv.org/abs/1204.5940v1

Physics

Atomic Physics

7 pages, 2 figures

Scientific paper

High-gain resonant nonlinear Raman scattering on trapped cold atoms within a high-fineness ring optical cavity is simply explained under a nonlinear opto-mechanical mechanism, and a proposal using it to detect frequency of micro-trap on atom chip is presented. The enhancement of scattering spectrum is due to coherent Raman conversion between two different cavity modes mediated by collective vibrations of atoms through nonlinear opto-mechanical couplings. The physical conditions of this technique are roughly estimated on Rubidium atoms, and a simple quantum analysis as well as a multi-body semiclassical simulation on this nonlinear Raman process is conducted.

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