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

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

2009-12-21

arxiv.org/abs/0912.3803v1

Phys. Rev. A 81, 063618 (2010)

Physics

Condensed Matter

Quantum Gases

13 pages, 22 figures

Scientific paper

10.1103/PhysRevA.81.063618

We propose a method 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, we show that 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 novel probes to accurately characterize fermionic quantum gases confined to optical lattices.

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