Resonant quantum dynamics of few ultracold bosons in periodically driven finite lattices

Abstract

The out-of-equilibrium dynamics of finite ultracold bosonic ensembles in periodically driven one-dimensional optical lattices is investigated. Our study reveals that the driving enforces the bosons in different wells to oscillate in-phase and to exhibit a dipole-like mode. A wide range from weak-to-strong driving frequencies is covered and a resonance-like behaviour of the intra-well dynamics is discussed. In the proximity of the resonance a rich intraband excitation spectrum is observed. The single particle excitation mechanisms are studied in the framework of Floquet theory elucidating the role of the driving frequency. The impact of the interatomic repulsive interactions is examined in detail yielding a strong influence on the tunneling period and the excitation probabilities. Finally, the dependence of the resonance upon a variation of the tunable parameters of the optical lattice is examined. Our analysis is based on the ab-initio Multi-Configuration Time-Dependent Hartree Method for bosons.

14 pages, 9 figures

References in corpus (17)

• Many-Body Physics with Ultracold Gases
• Periodically-driven quantum systems: Effective Hamiltonians and engineered gauge fields
• Dynamical control of matter-wave tunneling in periodic potentials
• Dynamics of Loschmidt echoes and fidelity decay
• Tunable gauge potential for neutral and spinless particles in driven lattices
• The multi-configurational time-dependent Hartree method for bosons: Many-body dynamics of bosonic systems
• Observation of photon-assisted tunneling in optical lattices
• Role of excited states in the splitting dynamics of interacting Bose-Einstein condensates when ramping-up a barrier
• An atomic Hong-Ou-Mandel experiment
• Periodically-driven quantum matter: the case of resonant modulations
• Stability of a Floquet Bose-Einstein condensate in a one-dimensional optical lattice
• Negative quench induced excitation dynamics for ultracold bosons in one-dimensional lattices
• Suppression of Quantum Scattering in Strongly Confined Systems
• Many-body theory for systems with particle conversion: Extending the multiconfigurational time-dependent Hartree method
• Cold atoms in real-space optical lattices
• Site-selective particle deposition in periodically driven quantum lattices
• Symmetries and transport in site-dependently driven quantum lattices

Cited by in corpus (21)

• Few-body Bose gases in low dimensions -- a laboratory for quantum dynamics
• Correlation Effects in the Quench-Induced Phase Separation Dynamics of a Two-Species Ultracold Quantum Gas
• Parametric Instability Rates in Periodically-Driven Band Systems
• Phases, many-body entropy measures and coherence of interacting bosons in optical lattices
• Mode coupling of interaction quenched ultracold few-boson ensembles in periodically driven lattices
• The uncertainty product of an out-of-equilibrium many-particle system
• Many-Body Dissipative Flow of a Confined Scalar Bose-Einstein Condensate Driven by a Gaussian Impurity
• Correlated Tunneling Dynamics of an Ultracold Fermi-Fermi Mixture Confined in a Double-Well
• Quantum dynamical response of ultracold few boson ensembles in finite optical lattices to multiple interaction quenches
• Statistical mechanics of one-dimensional quantum droplets
• Variance of an anisotropic Bose-Einstein condensate
• Collective excitations of dipolar gases based on local tunneling in superlattices
• Quench Dynamics of Two One-Dimensional Harmonically Trapped Bosons Bridging Attraction and Repulsion
• Quench Dynamics of Finite Bosonic Ensembles in Optical Lattices with Spatially Modulated Interactions
• Attractive Bose-Einstein condensates in anharmonic traps: Accurate numerical treatment and the intriguing physics of the variance
• Pulse and continuously driven many-body quantum dynamics of bosonic impurities in a Bose-Einstein condensate
• Many-body effects in the excitation spectrum of weakly-interacting Bose-Einstein condensates in one-dimensional optical lattices
• Simulation of the Quantum Dynamics of Indistinguishable Bosons with the Coupled Coherent States Method
• Uncertainty product of an out-of-equilibrium Bose-Einstein condensate
• Correlation dynamics of dipolar bosons in 1D triple well optical lattice
• Many-body effects in the excitations and dynamics of trapped Bose-Einstein condensates