Chiral Rashba spin textures in ultra-cold Fermi gases

Abstract

Spin-orbit coupling is an important ingredient in many recently discovered phenomena such as the spin-Hall effect and topological insulators. Of particular interest is topological superconductivity, with its potential application in topological quantum computation. The absence of disorder in ultra-cold atomic systems makes them ideal for quantum computation applications, however, the spin-orbit (SO) coupling schemes proposed thus far are experimentally impractical owing to large spontaneous emission rates in the alkali fermions. In this paper, we develop a scheme to generate Rashba SO coupling with a low spontaneous emission extension to a recent experiment. We show that this scheme generates a Fermi surface spin texture for ${}^{40}\mathrm{K}$ atoms, which is observable in time-of-flight measurements. The chiral spin texture, together with conventional $s$-wave interactions leads to topological superconductivity and non-Abelian Majorana quasiparticles.

4 pages, 3 figures

References in corpus (28)

• Topological Insulators
• Fault-tolerant quantum computation by anyons
• Non-Abelian Anyons and Topological Quantum Computation
• Paired states of fermions in two dimensions with breaking of parity and time-reversal symmetries, and the fractional quantum Hall effect
• Classification of topological insulators and superconductors in three spatial dimensions
• Universal Intrinsic Spin-Hall Effect
• A spin-orbit coupled Bose-Einstein condensate
• Dissipationless Quantum Spin Current at Room Temperature
• A generic new platform for topological quantum computation using semiconductor heterostructures
• Non-Abelian Topological Order in S-Wave Superfluids of Ultracold Fermionic Atoms
• Emergence of the persistent spin helix in semiconductor quantum wells
• A Bose-Einstein Condensate in a Uniform Light-induced Vector Potential
• Non-Abelian gauge potentials for ultra-cold atoms with degenerate dark states
• Non-Abelian quantum order in spin-orbit-coupled semiconductors: The search for topological Majorana particles in solid state systems
• Cold atoms in non-Abelian gauge potentials: From the Hofstadter "moth" to lattice gauge theory
• $p_x+i{p}_y$ superfluid from s-wave interactions of fermionic cold atoms
• Engineering Time-Reversal Invariant Topological Insulators With Ultra-Cold Atoms
• Realistic Time-Reversal Invariant Topological Insulators With Neutral Atoms
• Spin-orbit coupled Bose-Einstein condensates
• Spin Hall effects for cold atoms in a light induced gauge potential
• High-Resolution Magnetometry with a Spinor Bose-Einstein Condensate
• Effect of Induced Spin-Orbit Coupling for Atoms via Laser Fields
• Topological states in two-dimensional optical lattices
• Non-equilibrium spin dynamics in a trapped Fermi gas with effective spin-orbit interaction
• Topological Insulators and Metals in Atomic Optical Lattices
• Spin-orbit coupling and Berry phase with ultracold atoms in 2D optical lattices
• Periodically-dressed Bose-Einstein condensates: a superfluid with an anisotropic and variable critical velocity
• Collisional de-excitation in a quasi-2D degenerate Bose gas

Cited by in corpus (90)

• Light-induced gauge fields for ultracold atoms
• Spinor Bose-Einstein condensates
• Spin-Injection Spectroscopy of a Spin-Orbit Coupled Fermi Gas
• Periodically-driven quantum systems: Effective Hamiltonians and engineered gauge fields
• Degenerate Quantum Gases with Spin-Orbit Coupling
• Majorana fermions emerging from magnetic nanoparticles on a superconductor without spin-orbit coupling
• Trapped two-dimensional condensates with synthetic spin-orbit coupling
• Spin-Orbit Coupled Quantum Gases
• Realization of 2D Spin-orbit Interaction and Exotic Topological Orders in Cold Atoms
• Bright solitons in spin-orbit-coupled Bose-Einstein condensates
• Probing anisotropic superfluidity of rashbons in atomic Fermi gases
• Seeing topological order in time-of-flight measurements
• Spin-Orbit Coupled Fermi Gases across a Feshbach Resonance
• Manipulating Topological Edge Spins in One-Dimensional Optical Lattice
• Vortex structures of rotating spin-orbit coupled Bose-Einstein condensates
• Topological Superfluids with Finite Momentum Pairing and Majorana Fermions
• Spin-orbit-coupled dipolar Bose-Einstein condensates
• Tunable spin-orbit coupling synthesized with a modulating gradient magnetic field
• Atomic spin-orbit coupling synthesized with magnetic-field-gradient pulses
• BCS-BEC Crossover in 2D Fermi Gases with Rashba Spin-Orbit Coupling
• Stability of spin-orbit coupled Fermi gases with population imbalance
• Quantum quench in a p + i p superfluid: Winding numbers and topological states far from equilibrium
• Probing Majorana fermions in spin-orbit coupled atomic Fermi gases
• Topological superfluid in one-dimensional spin-orbit coupled atomic Fermi gases
• First- and Second-Order Topological Superconductivity and Temperature-Driven Topological Phase Transitions in the Extended Hubbard Model with Spin-Orbit Coupling
• Order by Disorder in Spin-Orbit Coupled Bose-Einstein Condensates
• Paired Superfluidity and Fractionalized Vortices in Spin-orbit Coupled Bosons
• Rashba spin-orbit coupled atomic Fermi gases
• Dirac, Rashba and Weyl type spin-orbit couplings: toward experimental realization in ultracold atoms
• Josephson dynamics of a spin-orbit coupled Bose-Einstein condensate in a double well potential
• Symmetry classification of spin-orbit coupled spinor Bose-Einstein condensates
• Tuning the Tricritical Point with Spin-orbit Coupling in Polarized Fermionic Condensates
• Opposite effect of spin-orbit coupling on condensation and superfluidity
• BCS-BEC crossover in spin-orbit coupled two-dimensional Fermi gases
• Dissipative topological superconductors in number-conserving systems
• Mixed partial-wave scattering with spin-orbit coupling and validity of pseudo-potentials
• Spin-orbit coupling induced quantum droplet in ultracold Bose-Fermi mixtures
• Dynamically generating arbitrary spin-orbit couplings for neutral atoms
• Topological phase transitions between chiral and helical spin textures in a lattice with spin-orbit coupling and a magnetic field
• Dynamical topological phases in quenched spin-orbit coupled degenerate Fermi gas
• Enhancement of condensate depletion due to spin-orbit coupling
• Renormalization of interactions of ultracold atoms in simulated Rashba gauge fields
• Pairing Superfluidity in Spin-Orbit Coupled Ultracold Fermi Gases
• Superfluid-Insulator transition of two-species bosons with spin-orbit coupling
• Quantum phases of atomic Fermi gases with anisotropic spin-orbit coupling
• Spin-orbit coupling and topological phases for ultracold atoms
• BCS-BEC crossover in three-dimensional Fermi gases with spherical spin-orbit coupling
• Topological Quantum Phase Transition in Synthetic Non-Abelian Gauge Potential
• Superfluidity and collective modes in Rashba spin-orbit coupled Fermi gases
• Metallic state in bosonic systems with continuously degenerate minima
• Universal Borromean Binding in Spin-Orbit Coupled Ultracold Fermi Gases
• Methods for detecting charge fractionalization and winding numbers in an interacting fermionic ladder
• Emergent Kinetics and Fractionalized Charge in 1D Spin-Orbit Coupled Flatband Optical Lattices
• Rashba spin-orbit coupling, strong interactions, and the BCS-BEC crossover in the ground state of the two-dimensional Fermi Gas
• Spin-orbit Coupling in Optical lattices
• Fulde-Ferrell superfluidity in ultracold Fermi gases with Rashba spin-orbit coupling
• Superfluidity in the absence of kinetics in spin-orbit-coupled optical lattices
• Unusual Zeeman-field effects in two-dimensional spin-orbit-coupled Fermi superfluids
• Spin-orbital-angular-momentum-coupled quantum gases
• Topological transport in a spin-orbit coupled bosonic Mott insulator
• Quantum memories with zero-energy Majorana modes and experimental constraints
• Large Chern Number Topological Superfluids in Coupled Layer System
• Spontaneous generation of spin-orbit coupling in magnetic dipolar Fermi gases
• Dynamical Detection of Topological Phase Transitions in Short-Lived Atomic Systems
• Time Translation Symmetry Breaking in an Isolated Spin-Orbit-Coupled Fluid of Light
• Edge currents as a probe of the strongly spin-polarized topological noncentrosymmetric superconductors
• Efimov physics and universal trimer in spin-orbit coupled ultracold atomic mixtures
• Spin dynamics in a spin-orbit coupled Fermi gas
• Topological quantum phase transitions and edge states in spin-orbital coupled Fermi gases
• Many-Body Spin Echo
• Vortices and vortex states in Rashba spin-orbit-coupled condensates
• Validity of single-channel model for a spin-orbit coupled atomic Fermi gas near Feshbach resonances
• Quasiparticle Berry curvature and Chern numbers in spin-orbit coupled bosonic Mott insulators
• Proposed method to realize the $p$-wave superfluid state using a $s$-wave superfluid Fermi gas with a synthetic spin-orbit interaction
• Edge states and topological properties of electrons on the bismuth on silicon surface with giant spin-orbit coupling
• Phase diagram, band structure and density of states in two-dimensional attractive Fermi-Hubbard model with Rashba spin-orbit coupling
• Fulde-Ferrell pairing instability of a Rashba spin-orbit coupled Fermi gas
• Interaction-Tuned Dynamical Transitions in a Rashba Spin-Orbit Coupled Fermi Gas
• Charge and spin fractionalization in strongly correlated topological insulators
• Mass-imbalanced Fermi gases with spin-orbit coupling
• Triplet pair amplitude in a trapped $s$-wave superfluid Fermi gas with broken spin rotation symmetry
• Optical Lattice Modulation Spectroscopy for Spin-orbit Coupled Bosons
• Normal state properties of spin-orbit coupled Fermi gases in the upper branch of energy spectrum
• Non-Galilean response of Rashba coupled Fermi gases
• Magnetization and collective excitations of a magnetic dipole fermion gas
• Spin Hall mode in a trapped thermal Rashba gas
• Triplet pair amplitude in a trapped $s$-wave superfluid Fermi gas with broken spin rotation symmetry. II. Three dimensional continuum case
• Two atoms in a harmonic trap with spin-orbital-angular-momentum coupling
• Orbital Optical Raman Lattice
• Topological Superfluidity of Spin-Orbit Coupled Bilayer Fermi Gases