Spin-exchange-induced exotic superfluids in a Bose-Fermi spinor mixture

  title={Spin-exchange-induced exotic superfluids in a Bose-Fermi spinor mixture},
  author={Chuanzhou Zhu and Li Chen and Hui Hu and Xia-ji Liu and H. Pu},
  journal={Physical Review A},
We consider a mixture of spin-1/2 bosons and fermions, where only the bosons are subjected to the spin-orbit coupling induced by Raman beams. The fermions, although not directly coupled to the Raman lasers, acquire an effective spin-orbit coupling through the spin-exchange interaction between the two species. Our calculation shows that this is a promising way of obtaining spin-orbit coupled Fermi gas without Raman-induced heating, where the long-sought topological Fermi superfluids and… Expand

Figures from this paper

Roton-Induced Bose Polaron in the Presence of Synthetic Spin-Orbit Coupling.
This novel polaron is formed by dressing the impurity with roton excitations, instead of phonon excitations as in a conventional Bose polaron, and acquires a significant center-of-mass momentum and highly anisotropic effective mass. Expand
Bound states of spin–orbit coupled cold atoms in a Dirac delta-function potential
Dirac delta-function potential is widely studied in quantum mechanics because it usually can be exactly solved and at the same time is useful in modeling various physical systems. Here we study aExpand
Polarizing the medium: Fermion-mediated interactions between bosons
We consider a homogeneous mixture of bosons and polarized fermions. We find that long-range and attractive fermion-mediated interactions between bosons have dramatic effects on the properties of theExpand
Realization and Detection of Nonergodic Critical Phases in an Optical Raman Lattice.
An incommensurate topological insulating model of AIII symmetry class is proposed to realize critical phases through an optical Raman lattice scheme, which possesses a one-dimensional (1D) spin-orbit coupling and an incommonsurate Zeeman potential. Expand


Spin-exchange-induced spin-orbit coupling in a superfluid mixture
We investigate the ground-state properties of a dual-species spin-1/2 Bose-Einstein condensate. One of the species is subjected to a pair of Raman laser beams that induces spin-orbit (SO) coupling,Expand
Topological superfluid in one-dimensional spin-orbit-coupled atomic Fermi gases
We investigate theoretically the prospect of realizing a topological superfluid in one-dimensional spin-orbit-coupled atomic Fermi gases under a Zeeman field in harmonic traps. In the absence ofExpand
Degenerate quantum gases with spin-orbit coupling: a review.
  • H. Zhai
  • Physics, Medicine
  • Reports on progress in physics. Physical Society
  • 2015
It is shown that investigating SO coupling in cold atom systems can enrich the understanding of basic phenomena such as superfluidity, provide a good platform for simulating condensed matter states such as topological superfluids and result in novel quantum systems such as SO coupled unitary Fermi gas and high spin quantum gases. Expand
Realization of two-dimensional spin-orbit coupling for Bose-Einstein condensates
The realization of 2D SO coupling with advantages of small heating and topological stability opens a broad avenue in cold atoms to study exotic quantum phases, including topological superfluids. Expand
Spin-injection spectroscopy of a spin-orbit coupled Fermi gas.
The coupling of the spin of electrons to their motional state lies at the heart of recently discovered topological phases of matter and the spin-orbit gap is revealed via spin-injection spectroscopy, which characterizes the energy-momentum dispersion and spin composition of the quantum states. Expand
Impurity probe of topological superfluids in one-dimensional spin-orbit-coupled atomic Fermi gases
We investigate theoretically non-magnetic impurity scattering in a one-dimensional atomic topological superfluid in harmonic traps, by solving self-consistently the microscopic Bogoliubov-de GennesExpand
Topological Fulde-Ferrell superfluid in spin-orbit-coupled atomic Fermi gases
We theoretically predict a new topological matter - topological inhomogeneous Fulde-Ferrell superfluid - in one-dimensional atomic Fermi gases with equal Rashba and Dresselhaus spin-orbit couplingExpand
Spin-orbit coupled spinor Bose-Einstein condensates.
This Letter studies spin-1/2 andspin-1 Bose-Einstein condensates with Rashba spin-orbit coupling, and finds that the condensate wave function will develop nontrivial structures. Expand
Spin–orbit-coupled Bose–Einstein condensates
The engineered SO coupling in a neutral atomic Bose–Einstein condensate sets the stage for the realization of topological insulators in fermionic neutral atom systems and develops a many-body theory that provides quantitative agreement with the observed location of the transition. Expand
Majorana fermions in one-dimensional spin-orbit-coupled Fermi gases
We theoretically study trapped one-dimensional Fermi gases in the presence of spin-orbit coupling induced by Raman lasers. The gas changes from a conventional (nontopological) superfluid to aExpand