Periodically-dressed Bose-Einstein condensates: a superfluid with an anisotropic and variable critical velocity

Abstract

Two intersecting laser beams can produce a spatially-periodic coupling between two components of an atomic gas and thereby modify the dispersion relation of the gas according to a dressed-state formalism. Properties of a Bose-Einstein condensate of such a gas are strongly affected by this modification. A Bogoliubov transformation is presented which accounts for interparticle interactions to obtain the quasiparticle excitation spectrum in such a condensate. The Landau critical velocity is found to be anisotropic and can be widely tuned by varying properties of the dressing laser beams.

5 pages, 4 figures

References in corpus (1)

• Superfluid and Dissipative Dynamics of a Bose-Einstein Condensate in a Periodic Optical Potential

Cited by in corpus (53)

• Light-induced gauge fields for ultracold atoms
• Spin-orbit coupling in quantum gases
• Degenerate Quantum Gases with Spin-Orbit Coupling
• A Bose-Einstein Condensate in a Uniform Light-induced Vector Potential
• Observation of Zitterbewegung in a spin-orbit coupled Bose-Einstein condensate
• Raman processes and effective gauge potentials
• Direct observation of chiral currents and magnetic reflection in atomic flux lattices
• Tunable Landau-Zener transitions in a spin-orbit coupled Bose-Einstein condensate
• Spin-orbit coupled Bose-Einstein condensates in a one-dimensional optical lattice
• Spin-orbit coupling and spin Hall effect for neutral atoms without spin-flips
• Anisotropic superfluidity in a dipolar Bose gas
• The Fulde-Ferrell-Larkin-Ovchinnikov state for ultracold fermions in lattice and harmonic potentials: a review
• Roton-Maxon Excitation Spectrum of Bose Condensates in a Shaken Optical Lattice
• Chiral Rashba spin textures in ultra-cold Fermi gases
• Measurement of collective excitations in a spin-orbit-coupled Bose-Einstein condensate
• A long-lived spin-orbit-coupled degenerate dipolar Fermi gas
• Spin-orbit coupled two-electron Fermi gases of ytterbium atoms
• Interacting spin-orbit-coupled spin-1 Bose-Einstein condensates
• Localization of a spin-orbit coupled Bose-Einstein condensate in a bichromatic optical lattice
• Modulational instability in binary spin-orbit-coupled Bose-Einstein condensates
• Phase separation in a spin-orbit coupled Bose-Einstein condensate
• Antipolar ordering of topological defects in active liquid crystals
• A comprehensive review on developments of synthetic dimensions
• Dynamical instability of the XY spiral state of ferromagnetic condensates
• Generating Schrödinger-cat states in momentum and internal-state space from Bose-Einstein condensates with repulsive interactions
• Cooling dynamics of ultracold two-species Fermi-Bose mixtures
• Spin-orbit coupling and topological phases for ultracold atoms
• Spontaneous symmetry breaking in a spin-orbit coupled $f=2$ spinor condensate
• Spin-momentum coupled Bose-Einstein condensates with lattice band pseudospins
• Spin-orbit Coupling in Optical lattices
• Ultracold atomic Fermi-Bose mixtures in bichromatic optical dipole traps: a novel route to study fermion superfluidity
• Chiral spin superfluidity and spontaneous spin Hall effect of interacting bosons
• Superfluidity in the absence of kinetics in spin-orbit-coupled optical lattices
• Nonlinear waves in coherently coupled Bose-Einstein condensates
• Thermodynamic properties of rotating trapped ideal Bose gases
• Landau's criterion for an anisotropic Bose-Einstein condensate
• Quantum Phases of Two-Component Bosons with Spin-Orbit Coupling in Optical Lattices
• Effective triangular ladders with staggered flux from spin-orbit coupling in 1D optical lattices
• Collisional decay of a strongly driven Bose-Einstein condensate
• Stueckelberg interferometry using periodically driven spin-orbit coupled Bose-Einstein condensates
• Strong coupling phases of the spin-orbit-coupled spin-1 Bose-Hubbard chain: odd integer Mott lobes and helical magnetic phases
• Thermodynamics of rotating Bose gases in a trap
• Anisotropic dissipation of superfluid flow in a periodically-dressed Bose-Einstein condensate
• Spin-Orbit Coupling and Topological States in $F=\frac{3}{2}$ Cold Fermi Gas
• On The Existence of Roton Excitations in Bose Einstein Condensates: Signature of Proximity to a Mott Insulating Phase
• Impurity induced Modulational instability in Bose-Einstein condensates
• Spin-orbit coupled bosons in one dimension: emergent gauge field and Lifshitz transition
• Time-reversal-invariant spin-orbit-coupled bilayer Bose-Einstein Condensates
• Stability of Emergent Kinetics in Optical Lattices with Artificial Spin-Orbit Coupling
• Ferromagnetic to antiferromagnetic transition of one-dimensional spinor Bose gases with spin-orbit coupling
• Influence of quantum fluctuations on the superfluid critical velocity of a one-dimensional Bose gas
• Master's Thesis: Excitation Spectrum of a Weakly Interacting Spin-Orbit Coupled Bose-Einstein Condensate
• Encoding a topological gauge theory on a ring-shaped Raman-coupled Bose gas