Probing superfluidity of periodically trapped ultracold atoms in a cavity by transmission spectroscopy

Details Probing superfluidity of periodically trapped ultracold atoms in a cavity by transmission spectroscopy Probing superfluidity of periodically trapped ultracold atoms in a cavity by transmission spectroscopy

2009-05-06

arxiv.org/abs/0905.0817v1

Physics

Condensed Matter

Quantum Gases

3 pages

Scientific paper

We study a system of periodic Bose condensed atoms coupled to cavity photons using the input-output formalism. We show that the cavity will either act as a through pass Lorentzian filter when the superfluid fraction of the condensate is minimum or completely reflect the input field when the superfluid fraction is maximum. We show that by monitoring the ratio between the transmitted field and the reflected field, one can estimate the superfluid fraction.

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