Fermi Gases with Synthetic Spin-Orbit Coupling
arXiv:1411.3043 · doi:10.1142/9789814590174_0002
Abstract
We briefly review recent progress on ultracold atomic Fermi gases with different types of synthetic spin-orbit coupling, including the one-dimensional (1D) equal weight Rashba-Dresselhaus and two-dimensional (2D) Rasbha spin-orbit couplings. Theoretically, we show how the single-body, two-body and many-body properties of Fermi gases are dramatically changed by spin-orbit coupling. In particular, the interplay between spin-orbit coupling and interatomic interaction may lead to several long-sought exotic superfluid phases at low temperatures, such as anisotropic superfluid, topological superfluid and inhomogeneous superfluid. Experimentally, only the first type - equal weight combination of Rasbha and Dresselhaus spin-orbit couplings - has been realized very recently using a two-photon Raman process. We show how to characterize a normal spin-orbit coupled atomic Fermi gas in both non-interacting and strongly-interacting limits, using particularly momentum-resolved radio-frequency spectroscopy. The experimental demonstration of a strongly-interacting spin-orbit coupled Fermi gas opens a promising way to observe various exotic superfluid phases in the near future.
35 pages, 29 fiugres. Invited review paper for Annual Review of Cold Atoms and Molecules (Volume 2) (2014)
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- Spin-Orbit Coupling Induced Spin Squeezing in Three-Component Bose Gases
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- Sub-Doppler laser cooling of 23Na in gray molasses on the D2 line
- Non-Hermitian skin effect in a spin-orbit-coupled Bose-Einstein condensate
- Gauge-potential-induced rotation of spin-orbit-coupled Bose-Einstein condensates
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- Induced interactions in the BCS-BEC crossover of two-dimensional Fermi gases with Rashba spin-orbit coupling
- Spin-orbit-coupled atomic Fermi gases in two-dimensional optical lattices in the presence of a Zeeman field
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- Pseudopotentials for Two-dimentional Ultracold Scattering in the Presence of Synthetic Spin-orbit-coupling