Self-trapping in an array of coupled 1D Bose gases

Abstract

We study the transverse expansion of arrays of ultracold ${}^{87}$Rb atoms weakly confined in tubes created by a 2D optical lattice, and observe that transverse expansion is delayed because of mutual atom interactions. A mean-field model of a coupled array shows that atoms become localized within a roughly square fort-like self-trapping barrier with time-evolving edges. But the observed dynamics is poorly described by the mean-field model. Theoretical introduction of random phase fluctuations among tubes improves the agreement with experiment, but does not correctly predict the density at which the atoms start to expand with larger lattice depths. Our results suggest a new type of self-trapping, where quantum correlations suppress tunneling even when there are no density gradients.

References in corpus (23)

• Many-Body Physics with Ultracold Gases
• The density-matrix renormalization group
• Nonequilibrium dynamics of closed interacting quantum systems
• Efficient classical simulation of slightly entangled quantum computations
• Direct Observation of Tunneling and Nonlinear Self-Trapping in a single Bosonic Josephson Junction
• Quantum Coherent Atomic Tunneling between Two Trapped Bose-Einstein Condensates
• Discrete Solitons and Breathers with Dilute Bose-Einstein Condensates
• Probing the Superfluid to Mott Insulator Transition at the Single Atom Level
• Phase space representation of quantum dynamics
• Dynamics and statistical mechanics of ultra-cold Bose gases using c-field techniques
• Quantum Many-Body Phenomena in Coupled Cavity Arrays
• Bosons in cigar-shape traps: Thomas-Fermi regime, Tonks-Girardeau regime, and between
• Correlations and Counting Statistics of an Atom Laser
• Nonlinear Self-Trapping of Matter Waves in Periodic Potentials
• Breakdown of the adiabatic limit in low dimensional gapless systems
• Supplementary Information to the paper ``Breakdown of the adiabatic limit in low dimensional gapless systems''
• Strongly inhibited transport of a 1D Bose gas in a lattice
• Phase diagram for a Bose-Einstein condensate moving in an optical lattice
• Slow Mass Transport and Statistical Evolution of An Atomic Gas Across the Superfluid-Mott Insulator Transition
• Cooling and Near-equilibrium Dynamics of Atomic Gases Across the Superfluid-Mott Insulator Transition
• Free expansion of a Bose-Einstein condensate in a 1D optical lattice
• Self-Trapping of Bose-Einstein Condensates in an Optical Lattice: the Effect of the System Dimension
• Breakdown of macroscopic quantum self-trapping in coupled mesoscopic one dimensional Bose gases

Cited by in corpus (24)

• Time-evolving a matrix product state with long-ranged interactions
• Exploring dynamical phase transitions with cold atoms in an optical cavity
• Negative mass hydrodynamics in a Spin-Orbit--Coupled Bose-Einstein Condensate
• Real-time and real-space spin- and energy dynamics in one-dimensional spin-1/2 systems induced by local quantum quenches at finite temperatures
• Observation of a Transition Between Dynamical Phases in a Quantum Degenerate Fermi Gas
• Dynamical phase transitions in the collisionless pre-thermal states of isolated quantum systems: theory and experiments
• Dynamical Quasicondensation of Hard-Core Bosons at Finite Momenta
• Entanglement spreading after a geometric quench in quantum spin chains
• Sudden expansion of Mott insulators in one dimension
• Real time dynamics and proposal for feasible experiments of lattice gauge-Higgs model simulated by cold atoms
• Effective dynamics of cold atoms flowing in two ring shaped optical potentials with tunable tunneling
• Nonlinear dynamics in a synthetic momentum state lattice
• Controlling Rydberg atom excitations in dense background gases
• Caustics in quantum many-body dynamics
• Sudden expansion and domain-wall melting of strongly interacting bosons in two-dimensional optical lattices and on multileg ladders
• Unveiling hidden structure of many-body wavefunctions of integrable systems via sudden expansion experiments
• Dynamical phase diagram of Gaussian BEC wave packets in optical lattices
• Expansion dynamics in two-dimensional Bose-Hubbard lattices: Bose-Einstein condensate and thermal cloud
• Efficiency of fermionic quantum distillation
• Metropolis-Hastings thermal state sampling for numerical simulations of Bose-Einstein condensates
• Self-trapping dynamics in a 2D optical lattice
• Expansion of strongly interacting dipolar bosons in 1D optical lattices
• Collective self-trapping of atoms in a cavity
• On the different Floquet Hamiltonians in a periodic-driven Bose-Josephson junction