Measuring the One-Particle Excitations of Ultracold Fermionic Atoms by Stimulated Raman Spectroscopy

2006/11/30 by Tung-Lam Dao, Antoine Georges, Jean Dalibard +2 · 1 citation
Physics and Astronomy · #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #Quantum, superfluid, helium dynamics #cond-mat.other

paper · pdf · doi:10.1103/physrevlett.98.240402

published as Phys. Rev. Lett. 98, 240402 (2007) · 5 pages, 3 figures accepted for publication at Phys. Rev. Letters

arxiv created 2007/04/30 · openalex publication_date 2007/06/14 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We propose a Raman spectroscopy technique which is able to probe the one-particle Green 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 pseudogap are clearly visible.

Citations

• Dynamical Breakup of the Fermi Surface in a Doped Mott Insulator
• Probing many-body states of ultracold atoms via noise correlations
• Observation of Bose-Einstein Condensation of Molecules
• Spatial quantum noise interferometry in expanding ultracold atom clouds

Cited by

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