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

Abstract

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.

13 pages, 22 figures

References in corpus (14)

• Many-Body Physics with Ultracold Gases
• The numerical renormalization group method for quantum impurity systems
• Using photoemission spectroscopy to probe a strongly interacting Fermi gas
• Phase diagram of a two-component Fermi gas with resonant interactions
• Molecules of Fermionic Atoms in an Optical Lattice
• Momentum-Resolved Bragg Spectroscopy in Optical Lattices
• Exploring correlated 1D Bose gases from the superfluid to the Mott-insulator state by inelastic light scattering
• Spin gradient thermometry for ultracold atoms in optical lattices
• Measuring the one-particle excitations of ultracold fermionic atoms by stimulated Raman spectroscopy
• Mott transition of fermionic atoms in a three-dimensional optical trap
• Dark state cooling of atoms by superfluid immersion
• Trapping and cooling fermionic atoms into the Mott and Néel states
• Light scattering for thermometry of fermionic atoms in an optical lattice
• Probing quasi-particle states in strongly interacting atomic gases by momentum-resolved Raman photoemission spectroscopy

Cited by in corpus (6)

• Cooling in strongly correlated optical lattices: prospects and challenges
• Cooling and thermometry of atomic Fermi gases
• Loss-induced phase separation and pairing for 3-species atomic lattice fermions
• Optical signatures of antiferromagnetic ordering of fermionic atoms in an optical lattice
• Thermometry of ultracold fermions by (super)lattice modulation spectroscopy
• Raman Characterization of Two-Dimensional Quasiperiodic Antiferromagnets on Various Lattices: Spin-Orbit Mechanism