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Thermometry and signatures of strong correlations from Raman spectroscopy of fermionic atoms in optical lattices

Jean-Sébastien Bernier, Tung-Lam Dao, Corinna Kollath, Antoine Georges, and Pablo S. Cornaglia
Phys. Rev. A 81, 063618 – Published 10 June 2010
Physics logo See Synopsis: Raman thermometer for fermions

Abstract

A method is proposed to directly measure the temperature of a gas of weakly interacting fermionic atoms loaded into an optical lattice. This technique relies on Raman spectroscopy and is applicable to experimentally relevant temperature regimes. Additionally, a similar spectroscopy scheme can be used to obtain information on the quasiparticle properties and Hubbard bands of the metallic and Mott-insulating states of interacting fermionic spin mixtures. These two methods provide experimentalists with probes to accurately characterize fermionic quantum gases confined to optical lattices.

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  • Received 21 December 2009

DOI:https://doi.org/10.1103/PhysRevA.81.063618

©2010 American Physical Society

Synopsis

Key Image

Raman thermometer for fermions

Published 11 June 2010

Raman spectroscopy has been put to use in measuring temperature and correlations of ultracold fermionic atoms loaded into an optical lattice.

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Authors & Affiliations

Jean-Sébastien Bernier1, Tung-Lam Dao2, Corinna Kollath1, Antoine Georges1,3, and Pablo S. Cornaglia4

  • 1Centre de Physique Théorique, École Polytechnique, CNRS, F-91128 Palaiseau Cedex, France
  • 2Laboratoire Charles Fabry de l’Institut d’Optique, CNRS, Université Paris-Sud, Campus de l’École Polytechnique, F-91127 Palaiseau Cedex, France
  • 3Collège de France, 11 Place Marcelin Berthelot, F-75005 Paris, France
  • 4Centro Atómico Bariloche and Instituto Balseiro, Comisión Nacional de Energia Atómica, Consejo Nacional de Investigaciones Científicas y Técnicas, 8400 Bariloche, Argentina

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Issue

Vol. 81, Iss. 6 — June 2010

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