Non-equilibrium coherence dynamics of a soft boson lattice

Abstract

We study the non-equilibrium evolution of the phase coherence of a Bose-Einstein condensate (BEC) in a one dimensional optical lattice, as the lattice is suddenly quenched from an insulating to a superfluid state. We observe slowly damped phase coherence oscillations in the regime of large filling factor (~100 bosons per site) at a frequency proportional to the generalized Josephson frequency. The truncated Wigner approximation (TWA) predicts the frequency of the observed oscillations.

10 pages. 4 figures

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Cited by in corpus (43)

• Many-Body Physics with Ultracold Gases
• Nonequilibrium dynamics of closed interacting quantum systems
• Probing the relaxation towards equilibrium in an isolated strongly correlated 1D Bose gas
• Equilibration, thermalisation, and the emergence of statistical mechanics in closed quantum systems
• Quantum Quenches in Extended Systems
• Dynamics and statistical mechanics of ultra-cold Bose gases using c-field techniques
• Exact relaxation in a class of non-equilibrium quantum lattice systems
• State preparation and dynamics of ultracold atoms in higher lattice orbitals
• Classifying and measuring the geometry of the quantum ground state manifold
• Spectroscopy of Collective Excitations in Interacting Low-Dimensional Many-Body Systems Using Quench Dynamics
• Ultracold Bosons in a Tilted Multi-level Double-Well Potential
• Inhomogeneous Quantum Quenches
• Quantum dynamics in the bosonic Josephson junction
• Quantum dynamics in splitting a harmonically trapped Bose-Einstein condensate by an optical lattice: Truncated Wigner approximation
• Bogoliubov theory of quantum correlations in the time-dependent Bose-Hubbard model
• Commuting Heisenberg operators as the quantum response problem: Time-normal averages in the truncated Wigner representation
• Adiabatic perturbation theory: from Landau-Zener problem to quenching through a quantum critical point
• Universal Correlations and Dynamic Disorder in a Nonlinear Periodic 1D System
• Landau-Zener sweeps and sudden quenches in coupled Bose-Hubbard chains
• Exact results on the quench dynamics of the entanglement entropy in the toric code
• Quench from Mott Insulator to Superfluid
• Quantum catastrophes and ergodicity in the dynamics of bosonic Josephson junctions
• Superfluid to Mott transition in a Bose-Hubbard ring: Persistent currents and defect formation
• Semiclassical quench dynamics of Bose gases in optical lattices
• Supercurrent survival under Rosen-Zener quench of hard core bosons
• Caustics in quantum many-body dynamics
• Bose - Einstein Condensate Superfluid-Mott Insulator Transition in an Optical Lattice
• Finite-rate quenches of site bias in the Bose-Hubbard dimer
• Performance evaluation of the discrete truncated Wigner approximation for quench dynamics of quantum spin systems with long-range interactions
• Evolution of Coherence During Ramps Across the Mott-Superfluid Phase Boundary
• Many-body effects in the excitation spectrum of weakly-interacting Bose-Einstein condensates in one-dimensional optical lattices
• Quench induced Mott insulator to superfluid quantum phase transition
• Survival of time-evolved correlations depends on whether quenching is across critical point in XY spin chain
• Quantum dynamics with an ensemble of Hamiltonians
• Manipulating atom-number distributions and detecting spatial distributions in lattice-confined spinor gases
• Quantum dynamics of instability-induced pulsations of a Bose-Einstein condensate in an optical lattice
• A ring of BEC pools as a trap for persistent flow
• Cluster truncated Wigner approximation for bond-disordered Heisenberg spin models
• Fidelity, Rosen-Zener Dynamics, Entropy and Decoherence in one dimensional hard-core bosonic systems
• Many-body effects in the excitations and dynamics of trapped Bose-Einstein condensates
• Caustics in the sine-Gordon model from quenches in coupled 1D Bose gases
• Dynamics of the Mott Insulator to Superfluid quantum phase transition in the truncated Wigner approximation
• Quantum equilibration of a model system Porphine