Momentum-resolved Raman spectroscopy of bound molecules in ultracold Fermi gas

Abstract

The binding energy of Feshbach molecules from a two component Fermi gas of ${}^{40}$K atoms has been experimentally measured with the momentum-resolved Raman spectroscopy. Comparing with the radio-frequency spectroscopy, in the present experiment the signal of unpaired (free atoms) and the bound molecules can be directly observed and the binding energy can be simultaneously determined in a single running experiment. The energy-momentum dispersion spectra of the strongly interacting ultracold Fermi gas in BEC side are also measured and reconstructed. The present experimental technology of the momentum-resolved Raman spectroscopy can be easily extended to perform spatially momentum-resolved Raman spectroscopy and to obtain the response spectra of a homogeneous system in the local density approximation.

5pages, 3 figures, appear in Phys. Rev. A

References in corpus (13)

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Cited by in corpus (6)

• The Fulde-Ferrell-Larkin-Ovchinnikov state for ultracold fermions in lattice and harmonic potentials: a review
• Spin-Orbit Coupling Induced Coherent Production of Feshbach Molecules in a Degenerate Fermi Gas
• Magnetic field dependence of Raman coupling in Alkali atoms
• Quantum Defect Theory for Orbital Feshbach Resonance
• Unconventional pairings of spin-orbit coupled attractive degenerate Fermi gas in a one dimensional optical lattice
• Experimental study of magnetically insensitive transitions in ultracold Fermi gas of ${}^{40}$K