Radio-frequency spectroscopy of a strongly interacting spin-orbit coupled Fermi gas

Abstract

We investigate experimentally and theoretically radio-frequency spectroscopy and pairing of a spin-orbit-coupled Fermi gas of ${}^{40}$K atoms near a Feshbach resonance at $B_0=202.2$ G. Experimentally, the integrated spectroscopy is measured, showing characteristic blue and red shifts in the atomic and molecular responses, respectively, with increasing spin-orbit coupling. Theoretically, a smooth transition from atomic to molecular responses in the momentum-resolved spectroscopy is predicted, with a clear signature of anisotropic pairing at and below resonance. Our many-body prediction agrees qualitatively well with the observed spectroscopy near the Feshbach resonance.

7 pages, 4 figures. Supercedes 1302.0559

References in corpus (13)

• Many-Body Physics with Ultracold Gases
• Theory of ultracold Fermi gases
• Spin-Injection Spectroscopy of a Spin-Orbit Coupled Fermi Gas
• Observation of the Pairing Gap in a Strongly Interacting Fermi Gas
• Using photoemission spectroscopy to probe a strongly interacting Fermi gas
• Virial expansion for a strongly correlated Fermi gas
• Determination of the Fermion Pair Size in a Resonantly Interacting Superfluid
• Virial expansion for a strongly correlated Fermi system and its application to ultracold atomic Fermi gases
• Pseudo-gap pairing in ultracold Fermi atoms
• Comparative study of strong coupling theories of a trapped Fermi gas at unitarity
• Magnetic field dependence of Raman coupling in Alkali atoms
• Radio-frequency spectroscopy of weakly bound molecules in spin-orbit coupled atomic Fermi gases
• Momentum-resolved radio-frequency spectroscopy of ultracold atomic Fermi gases in a spin-orbit coupled lattice

Cited by in corpus (39)

• Light-induced gauge fields for ultracold atoms
• Degenerate Quantum Gases with Spin-Orbit Coupling
• Artificial gauge fields in materials and engineered systems
• A Raman-induced Feshbach resonance in an effectively single-component Fermi gas
• Spin-Orbit Coupling Induced Coherent Production of Feshbach Molecules in a Degenerate Fermi Gas
• The Raman dressed spin-1 spin-orbit coupled quantum gas
• Anisotropic Weyl Fermions from Quasiparticle Excitation Spectrum of a 3D Fulde-Ferrell Superfluid
• Dynamics of interacting fermions under spin-orbit coupling in an optical lattice clock
• Competing superfluid orders in spin-orbit coupled fermionic cold atom optical lattices
• Superfluid Density of a Spin-orbit Coupled Bose Gas
• Topological Fulde-Ferrell superfluid in spin-orbit coupled atomic Fermi gases
• Berezinskii-Kosterlitz-Thouless Phase Transition in 2D Spin-Orbit Coupled Fulde-Ferrell Superfluids
• Mott-Superfluid Transition for Spin-Orbit Coupled Bosons in One-Dimensional Optical Lattices
• Quantum Geometric Contributions to the BKT Transition: Beyond Mean Field Theory
• Spin-orbit coupling induced Fulde-Ferrell-Larkin-Ovchinnikov-like Cooper pairing and skyrmion-like polarization textures in trapped optical lattices
• Topological Fulde-Ferrell Superfluids of a Spin-Orbit Coupled Fermi Gas
• Emergent Kinetics and Fractionalized Charge in 1D Spin-Orbit Coupled Flatband Optical Lattices
• Gapless topological Fulde-Ferrell superfluidity induced by in-plane Zeeman field
• Dissipation-facilitated molecules in a Fermi gas with non-Hermitian spin-orbit coupling
• Edge binding of sine-Gordon solitons in spin-orbit coupled Bose-Einstein condensates
• Superfluid-Mott insulator transition in spin-orbit coupled Bose-Hubbard Model
• Superfluid density and Berezinskii-Kosterlitz-Thouless transition of a spin-orbit coupled Fulde-Ferrell superfluid
• Large Chern Number Topological Superfluids in Coupled Layer System
• Three-dimensional spin-orbit coupled Fermi gases: Fulde-Ferrell pairing, Majorana fermions, Weyl fermions and gapless topological superfluidity
• Attractive Hofstadter-Hubbard model with imbalanced chemical and vector potentials
• Anderson localization of Cooper pairs and Majorana fermions in an ultracold atomic Fermi gas with synthetic spin-orbit coupling
• Stripe-ordered superfluid and supersolid phases in attractive Hofstadter-Hubbard model
• Signatures of pairing and spin-orbit coupling in correlation functions of Fermi gases
• Thermodynamic Properties of Rashba Spin-Orbit-Coupled Fermi Gas
• Fulde-Ferrell pairing instability of a Rashba spin-orbit coupled Fermi gas
• Two types of dark solitons in a spin-orbit-coupled Fermi gas
• Weyl spin-orbit-coupling-induced interactions in uniform and trapped atomic quantum fluids
• Universal Quantum Computation With Majorana Fermion Edge Modes Through Microwave Spectroscopy Of Quasi-1D Cold Gases In Optical Lattices
• Radio-Frequency Manipulation of Fano-Feshbach Resonances in an Ultracold Fermi Gas of ${}^{40}$K
• Topological superfluids on a square optical lattice with non-Abelian gauge fields: Effects of next-nearest-neighbor hopping in the BCS-BEC evolution
• Evidence for correlated states in a cluster of bosons with Rashba spin-orbit coupling
• Dissociation of Feshbach molecules via spin-orbit coupling in ultracold Fermi gases
• Wavefunction Vortex Attachment via Matrix Products: Application to Atomic Fermi Gases in Flat Spin-Orbit Bands
• Nodal Line Topological Superfluid and Multiply Protected Majorana Fermi Arc in a Three-Dimensional Time-Reversal-Invariant Superfluid Model