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arXiv · cond-mat/0309489

Spectroscopic Temperature Determination of Degenerate Fermi Gases

Marijan Koštrun·Robin Côté
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Abstract

We suggest a simple method for measuring the temperature of ultra-cold gases made of fermions. We show that by using a two-photon Raman probe, it is possible to obtain lineshapes which reveal properties of the degenerate sample, notably its temperature $T$. The proposed method could be used with identical fermions in different hyperfine states interacting via s-wave scattering or identical fermions in the same hyperfine state via p-wave scattering. We illustrate the applicability of the method in realistic conditions for $^6$Li prepared in two different hyperfine states. We find that temperatures down to 0.05 $T_{F}$ can be determined by this {\it in-situ} method.

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Marijan Koštrun, Robin Côté. 2003-09-22. Spectroscopic Temperature Determination of Degenerate Fermi Gases. https://doi.org/10.1103/physreva.68.063409

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