Creating exotic condensates via quantum-phase-revival dynamics in engineered lattice potentials

Abstract

In the field of ultracold atoms in optical lattices a plethora of phenomena governed by the hopping energy $J$ and the interaction energy $U$ have been studied in recent years. However, the trapping potential typically present in these systems sets another energy scale and the effects of the corresponding time scale on the quantum dynamics have rarely been considered. Here we study the quantum collapse and revival of a lattice Bose-Einstein condensate (BEC) in an arbitrary spatial potential, focusing on the special case of harmonic confinement. Analyzing the time evolution of the single-particle density matrix, we show that the physics arising at the (temporally) recurrent quantum phase revivals is essentially captured by an effective single particle theory. This opens the possibility to prepare exotic non-equilibrium condensate states with a large degree of freedom by engineering the underlying spatial lattice potential.

9 pages, 6 figures

References in corpus (14)

• Many-Body Physics with Ultracold Gases
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• Quench dynamics and non equilibrium phase diagram of the Bose-Hubbard model
• Preparing and probing atomic number states with an atom interferometer
• Expansion of a quantum gas released from an optical lattice
• Coherent Interaction of a Single Fermion with a Small Bosonic Field
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• Condensed Groundstates of Frustrated Bose-Hubbard Models
• Multi-band and nonlinear hopping corrections to the 3D Bose-Fermi Hubbard model
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• Tunneling-induced damping of phase coherence revivals in deep optical lattices
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Cited by in corpus (14)

• Ultracold bosons with short-range interaction in regular optical lattices
• Condensate deformation and quantum depletion of Bose-Einstein condensates in external potentials
• Expansion of Bose-Hubbard Mott insulators in optical lattices
• Dynamics of a quantum phase transition in the Bose-Hubbard model: Kibble-Zurek mechanism and beyond
• Glassy Dynamics from Quark Confinement: Atomic Quantum Simulation of Gauge-Higgs Model on Lattice
• Dynamics of first-order quantum phase transitions in extended Bose-Hubbard model: From density wave to superfluid and vice-versa
• Many-site coherence revivals in the extended Bose-Hubbard model and the Gutzwiller approximation
• Bloch oscillations and quench dynamics of interacting bosons in an optical lattice
• Condensate fraction of cold gases in non-uniform external potential
• Out-of-equilibrium dynamics of multiple second-order quantum phase transitions in extended Bose-Hubbard model: Superfluid, supersolid and density wave
• Particle-Hole Pair Coherence in Mott Insulator Quench Dynamics
• Quadrature interferometry for nonequilibrium ultracold bosons in optical lattices
• Identifying strongly correlated supersolid states on the optical lattice by quench-induced π-states
• Sudden-quench dynamics of Bardeen-Cooper-Schrieffer states in deep optical lattices