Dissipative Superfluidity in a Molecular Bose-Einstein Condensate

Abstract

Motivated by recent experimental realization of a Bose-Einstein condensate (BEC) of dipolar molecules, we develop superfluid transport theory for a dissipative BEC to show that a weak uniform two-body loss can induce phase rigidity, leading to superfluid transport of bosons even without repulsive interparticle interactions. A generalized $f$-sum rule is shown to hold for a dissipative superfluid as a consequence of weak U(1) symmetry. We also demonstrate that dissipation enhances the stability of a molecular BEC with dipolar interactions. Possible experimental signature of dissipative superfluidity are discussed.

6 pages, 1 figure+29 pages 2 figures

References in corpus (54)

• Many-Body Physics with Ultracold Gases
• A High Phase-Space-Density Gas of Polar Molecules
• The physics of dipolar bosonic quantum gases
• Quantum States and Phases in Driven Open Quantum Systems with Cold Atoms
• Quantum-State Controlled Chemical Reactions of Ultracold KRb Molecules
• Dipolar collisions of polar molecules in the quantum regime
• Keldysh Field Theory for Driven Open Quantum Systems
• Ultracold dense samples of dipolar RbCs molecules in the rovibrational and hyperfine ground state
• Strong dissipation inhibits losses and induces correlations in cold molecular gases
• Symmetries and conserved quantities in Lindblad master equations
• Dipolar physics: A review of experiments with magnetic quantum gases
• Stationary states of a rotating Bose-Einstein condensate: routes to vortex nucleation
• A note on symmetry reductions of the Lindblad equation: transport in constrained open spin chains
• Creation of an ultracold gas of ground-state ${}^{23}{\mathrm{Na}}^{87}\mathrm{Rb}$ molecules
• Vortex lattice formation in a rotating Bose-Einstein condensate
• Observation of the Mott Insulator to Superfluid Crossover of a Driven-Dissipative Bose-Hubbard System
• Theory of Non-Hermitian Fermionic Superfluidity with a Complex-Valued Interaction
• Nonlinear dynamics for vortex lattice formation in a rotating Bose-Einstein condensate
• Evaporation of microwave-shielded polar molecules to quantum degeneracy
• Dissipation induced Tonks-Girardeau gas in an optical lattice
• Dissipation Induced Structural Instability and Chiral Dynamics in a Quantum Gas
• Observation of Bose-Einstein Condensation of Dipolar Molecules
• Microwave shielding of ultracold polar molecules
• Assembly of a rovibrational ground state molecule in an optical tweezer
• Photo-induced two-body loss of ultracold molecules
• Lieb-Liniger model of a dissipation-induced Tonks-Girardeau gas
• Anisotropic excitation spectrum of a dipolar quantum Bose gas
• Solitons in Bose-Einstein Condensates with time-dependent atomic scattering length in an expulsive parabolic and complex potential
• Dissipative Bose-Hubbard system with intrinsic two-body loss
• Collisions of ultracold molecules in bright and dark optical dipole traps
• Collective Excitations and Nonequilibrium Phase Transition in Dissipative Fermionic Superfluids
• Coherent Microwave Control of Ultracold ${}^{23}$Na${}^{40}$K Molecules
• Current in open quantum systems
• Measuring the Superfluid Fraction of an Ultracold Atomic Gas
• Probing photoinduced two-body loss of ultracold non-reactive bosonic ${}^{23}$Na${}^{87}$Rb and ${}^{23}$Na${}^{39}$K molecules
• Ultracold Gas of Dipolar NaCs Ground State Molecules
• Angle-resolved photoemission spectroscopy with quantum gas microscopes
• Ultracold Sticky Collisions: Theoretical and Experimental Status
• Two-dimensional dipolar Bose gas with the roton-maxon excitation spectrum
• Angle-resolved photoemission spectroscopy of a Fermi-Hubbard system
• Microwave shielding of bosonic NaRb molecules
• Dipolar Collisions of Ultracold Ground-state Bosonic Molecules
• Superfluid density of an open dissipative condensate
• Resonant dipolar collisions of ultracold molecules induced by microwave dressing
• Rotating atomic quantum gases with light-induced azimuthal gauge potentials and the observation of Hess-Fairbank effect
• Observation of the Hanbury Brown and Twiss Effect with Ultracold Molecules
• Effective Lagrangian for Nambu-Goldstone modes in nonequilibrium open systems
• A High Phase-Space Density Gas of NaCs Feshbach Molecules
• Non-Hermitian BCS-BEC evolution with a complex scattering length
• Yang-Lee Zeros, Semicircle Theorem, and Nonunitary Criticality in Bardeen-Cooper-Schrieffer Superconductivity
• Complex contact interaction for systems with short-range two-body loss
• Improved characterization of Feshbach resonances and interaction potentials between ${}^{23}$Na and ${}^{87}$Rb atoms
• Neutron interferometric measurement of the scattering length difference between the triplet and singlet states of n-${}^3$He
• Weakly interacting Bose gas with two-body losses

Cited by in corpus (1)

• Macroscopic Particle Transport in Dissipative Long-Range Bosonic Systems