Topological Fulde-Ferrell states in alkaline-earth-metal-like atoms near an orbital Feshbach resonance
arXiv:1703.00138 · doi:10.1103/PhysRevA.95.043634
Abstract
We study the effects of synthetic spin-orbit coupling on the pairing physics in quasi-one-dimensional ultracold Fermi gases of alkaline-earth-metal-like atoms near an orbital Feshbach resonance (OFR). The interplay between spin-orbit coupling and pairing interactions near the OFR leads to an interesting topological Fulde-Ferrell state, where the nontrivial topology of the state is solely encoded in the closed channel with a topologically trivial Fulde-Ferrell pairing in the open channel. We confirm the topological property of the system by characterizing the Zak phase and the edge states. The topological Fulde-Ferrell state can be identified by the momentum-space density distribution obtained from time-of-flight images.
6 pages, 5 figures
References in corpus (12)
- Degenerate Quantum Gases with Spin-Orbit Coupling
- Spectroscopic observation of SU(N)-symmetric interactions in Sr orbital magnetism
- Observation of two-orbital spin-exchange interactions with ultracold SU(N)-symmetric fermions
- Degenerate Fermi Gases of Ytterbium
- Synthetic dimensions and spin-orbit coupling with an optical clock transition
- Spin-orbit coupled fermions in an optical lattice clock
- Direct observation of coherent inter-orbital spin-exchange dynamics
- Alkaline-Earth-Metal Atoms as Few-Qubit Quantum Registers
- A long-lived spin-orbit-coupled degenerate dipolar Fermi gas
- Spin-orbit coupled two-electron Fermi gases of ytterbium atoms
- Spectral signatures of the Fulde-Ferrell-Larkin-Ovchinnikov order parameter in one-dimensional optical lattices
- Polarons and Molecules in a Fermi Gas with Orbital Feshbach Resonance
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- Simulating artificial one-dimensional physics with ultra-cold fermionic atoms: three exemplary themes
- Single-particle Excitations and Strong Coupling Effects in the BCS-BEC Crossover Regime of a Rare-Earth Fermi Gas with an Orbital Feshbach Resonance
- Majorana edge state in a number-conserving Fermi gas with tunable p-wave interaction
- Frustrated orbital Feshbach resonances in a Fermi gas
- Enhanced Fulde-Ferrell-Larkin-Ovchinnikov and Sarma superfluid states near an orbital Feshbach resonance
- Superfluid properties of an ultracold Fermi gas with an orbital Feshbach resonance in the BCS-BEC crossover region