Collective Excitations and Nonequilibrium Phase Transition in Dissipative Fermionic Superfluids

Abstract

We predict a new mechanism to induce collective excitations and a nonequilibrium phase transition of fermionic superfluids via a sudden switch-on of two-body loss, for which we extend the BCS theory to fully incorporate a change in particle number. We find that a sudden switch-on of dissipation induces an amplitude oscillation of the superfluid order parameter accompanied by a chirped phase rotation as a consequence of particle loss. We demonstrate that when dissipation is introduced to one of the two superfluids coupled via a Josephson junction, it gives rise to a nonequilibrium dynamical phase transition characterized by the vanishing dc Josephson current. The dissipation-induced collective modes and nonequilibrium phase transition can be realized with ultracold fermionic atoms subject to inelastic collisions.

8 + 9 pages, 7 figures, To appear in Physical Review Letters

References in corpus (27)

• Quantum trajectories and open many-body quantum systems
• Strong dissipation inhibits losses and induces correlations in cold molecular gases
• Amplitude / Higgs Modes in Condensed Matter Physics
• A note on symmetry reductions of the Lindblad equation: transport in constrained open spin chains
• Dynamical Phase Transitions and Instabilities in Open Atomic Many-Body Systems
• The `Higgs' Amplitude Mode at the Two-Dimensional Superfluid-Mott Insulator Transition
• Signatures of Many-Body Localization in a Controlled Open Quantum System
• Atomic three-body loss as a dynamical three-body interaction
• Synchronization in the BCS Pairing Dynamics as a Critical Phenomenon
• Dynamical vanishing of the order parameter in a fermionic condensate
• Dissipation induced Tonks-Girardeau gas in an optical lattice
• Two-terminal transport measurements with cold atoms
• Detecting the Amplitude Mode of Strongly Interacting Lattice Bosons by Bragg Scattering
• Nonequilibrium dynamics and thermodynamics of a degenerate Fermi gas across a Feshbach resonance
• Dissipation induced coherence of a two-mode Bose-Einstein condensate
• Quantum quench phase diagrams of an s-wave BCS-BEC condensate
• Higgs mode in a strongly interacting fermionic superfluid
• Connecting dissipation and phase slips in a Josephson junction between fermionic superfluids
• Nonequilibrium dynamics of weakly and strongly paired superconductors
• Lieb-Liniger model of a dissipation-induced Tonks-Girardeau gas
• Observation of coherent multiorbital polarons in a two-dimensional Fermi gas
• The Josephson effect throughout the BCS-BEC crossover
• Signature of the Leggett mode in the A1g Raman response: from MgB2 to iron-based superconductors
• Leggett mode in a strong-coupling model of iron arsenide superconductors
• Rectification in Nonequilibrium Steady States of Open Many-Body Systems
• Pure Goldstone mode in the quench dynamics of a confined ultracold Fermi gas in the BCS-BEC crossover regime
• Decay and revival of a transient trapped Fermi condensate

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• Modeling Particle Loss in Open Systems using Keldysh Path Integral and Second Order Cumulant Expansion
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• An exactly solvable dissipative spin liquid
• Solvable BCS-Hubbard Liouvillians in arbitrary dimensions
• Loss induced collective mode in one-dimensional Bose gases
• Universality and two-body losses: lessons from the effective non-Hermitian dynamics of two particles
• Non-Hermitian Haldane-Hubbard model: Effective description of one- and two-body dissipation
• Speeding up Pontus-Mpemba effects via dynamical phase transitions
• Exact dynamical correlations of nonlocal operators in quadratic open Fermion systems: a characteristic function approach
• Coherent Control of Collective Spontaneous Emission through Self-interference
• Correlation versus dissipation in a non-Hermitian Anderson impurity model
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• Dissipation induced transition between delocalization and localization in the three-dimensional Anderson model
• Phase diagram of non-Hermitian BCS superfluids in a dissipative asymmetric Hubbard model
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• Aperiodic Dissipation as a Mechanism for Steady-State Localization
• Local Non-Hermitian Hamiltonian Formalism for Dissipative Fermionic Systems and Loss-Induced Population Increase in Fermi Superfluids
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• Semiclassical analysis of spin dynamics in the non-Hermitian Hubbard model
• Eightfold way to dark states in SU(3) cold gases with two-body losses
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• Breakdown of the Meissner effect at the zero exceptional point in non-Hermitian two-band BCS model