Measuring the one-particle excitations of ultracold fermionic atoms by stimulated Raman spectroscopy

Abstract

We propose a Raman spectroscopy technique which is able to probe the one-particle Green's function, the Fermi surface, and the quasiparticles of a gas of strongly interacting ultracold atoms. We give quantitative examples of experimentally accessible spectra. The efficiency of the method is validated by means of simulated images for the case of a usual Fermi liquid as well as for more exotic states: specific signatures of e.g. a d-wave pseudo-gap are clearly visible.

5 pages, 3 figures accepted for publication at Phys. Rev. Letters

References in corpus (3)

• Observation of Bose-Einstein Condensation of Molecules
• Observation of the Pairing Gap in a Strongly Interacting Fermi Gas
• Spatial quantum noise interferometry in expanding ultracold atom clouds

Cited by in corpus (7)

• Using photoemission spectroscopy to probe a strongly interacting Fermi gas
• Universal theory of nonlinear Luttinger liquids
• Spectral function of spinless fermions on a one-dimensional lattice
• Exact exponents of edge singularities in dynamic correlation functions of 1D Bose gas
• Steady-state nonequilibrium density of states of driven strongly correlated lattice models in infinite dimensions
• Supersymmetry and Goldstino-like Mode in Bose-Fermi Mixtures
• Probing quasi-particle states in strongly interacting atomic gases by momentum-resolved Raman photoemission spectroscopy