Phase Coherence and Superfluid-Insulator Transition in a Disordered Bose-Einstein Condensate

Abstract

We have studied the effects of a disordered optical potential on the transport and phase coherence of a Bose-Einstein condensate (BEC) of 7Li atoms. At moderate disorder strengths (V_D), we observe inhibited transport and damping of dipole excitations, while in time-of-flight images, random but reproducible interference patterns are observed. In-situ images reveal that the appearance of interference is correlated with density modulation, without complete fragmentation. At higher V_D, the interference contrast diminishes as the BEC fragments into multiple pieces with little phase coherence.

4 pages, 5 figures, distortions in figures 1 and 4 have been fixed in version 3. This paper has been accepted to PRA

References in corpus (22)

• Formation and Propagation of Matter Wave Soliton Trains
• Formation of a Matter-Wave Bright Soliton
• Granular Electronic Systems
• A Bose-Einstein condensate in a random potential
• Nature of the superconductor-insulator transition in disordered superconductors
• Atomic Bose and Anderson glasses in optical lattices
• Suppression of Transport of an Interacting Elongated Bose-Einstein Condensate in a Random Potential
• Anderson Localization of Expanding Bose-Einstein Condensates in Random Potentials
• Observation of Phase Fluctuations in Bose-Einstein Condensates
• Effect of optical disorder and single defects on the expansion of a Bose-Einstein condensate in a one-dimensional waveguide
• Routes towards Anderson-Like localization of Bose-Einstein condensates in disordered optical lattices
• 39-K Bose-Einstein condensate with tunable interactions
• Experimental study of the transport of coherent interacting matter-waves in a 1D random potential induced by laser speckle
• Interference of an array of independent Bose-Einstein condensates
• The Elusive Bose Metal
• Ultracold Bose Gases in 1D Disorder: From Lifshits Glass to Bose-Einstein Condensate
• Superfluidity versus Anderson localization in a dilute Bose gas
• Atomic Fermi-Bose mixtures in inhomogeneous and random lattices: From Fermi glass to quantum spin glass and quantum percolation
• Effect of interactions on the localization of a Bose-Einstein condensate in a quasi-periodic lattice
• Smoothing effect and delocalization of interacting Bose-Einstein condensates in random potentials
• A Bose-Einstein condensate in an optical lattice with tunable spacing: transport and static properties
• Density modulations in an elongated Bose-Einstein condensate released from a disordered potential

Cited by in corpus (88)

• Non-standard Hubbard models in optical lattices: a review
• Disordered quantum gases under control
• Delocalization of a disordered bosonic system by repulsive interactions
• Extreme tunability of interactions in a ${}^7$Li Bose-Einstein condensate
• Anderson localization in Bose-Einstein condensates
• Strongly interacting bosons in a disordered optical lattice
• Cold Bosons in Optical Lattices
• The quasi-periodic Bose-Hubbard model and localization in one-dimensional cold atomic gases
• Disordered insulator in an optical lattice
• Two-terminal transport measurements with cold atoms
• Generalized Inverse Participation Ratio as a Possible Measure of Localization for Interacting Systems
• Cold atoms in the presence of disorder
• Two-point density correlations of quasicondensates in free expansion
• Collective excitation of a Bose-Einstein condensate by modulation of the atomic scattering length
• Photoassociation of a Bose-Einstein Condensate near a Feshbach Resonance
• Localization-Delocalization Transition of Indirect Excitons in Lateral Electrostatic Lattices
• Dissipative Transport of a Bose-Einstein Condensate
• Disorder-induced trapping versus Anderson localization in Bose-Einstein condensates expanding in disordered potentials
• Weakly interacting Bose gas in a random environment
• Bogoliubov Excitations of Disordered Bose-Einstein Condensates
• Momentum-resolved study of an array of 1D strongly phase-fluctuating Bose gases
• Localization of Bogoliubov quasiparticles in interacting Bose gases with correlated disorder
• Density modulations in an elongated Bose-Einstein condensate released from a disordered potential
• Equilibration Dynamics of Strongly Interacting Bosons in 2D Lattices with Disorder
• Dilute Bose gas with correlated disorder: A Path Integral Monte Carlo study
• Coherent backscattering of Bose-Einstein condensates in two-dimensional disorder potentials
• Quantum transport of atomic matterwaves in anisotropic 2D and 3D disorder
• Polariton Condensation in a One-Dimensional Disordered Potential
• Effect of disorder close to the superfluid transition in a two-dimensional Bose gas
• Dipole Oscillations of a Bose-Einstein Condensate in Presence of Defects and Disorder
• Superfluid to Bose-glass transition in a 1D weakly interacting Bose gas
• Anderson localization of a weakly interacting one dimensional Bose gas
• Direct evaporative cooling of 39K atoms to Bose-Einstein condensation
• Spatiotemporal coherence of non-equilibrium multimode photon condensates
• Wave chaos in the non-equilibrium dynamics of the Gross-Pitaevskii equation
• Transport regimes of cold gases in a two-dimensional anisotropic disorder
• Dynamics of Disordered States in the Bose-Hubbard Model with Confinement
• Superfluid to Bose-glass transition of hard core bosons in one-dimensional incommensurate optical lattice
• Localized and extended states in a disordered trap
• Direct Observation of Fragmentation in a Disordered, Strongly Interacting Fermi Gas
• Correlation function of weakly interacting bosons in a disordered lattice
• Mean-field phase diagram of the 1-D Bose gas in a disorder potential
• The superfluid insulator transition of ultra-cold bosons in disordered 1d traps
• Density of states in an optical speckle potential
• Breakdown of the superfluidity of a matter wave in a random environment
• Localized states and interaction induced delocalization in Bose gases with quenched disorder
• Damped Bloch Oscillations of Bose-Einstein Condensates in Disordered Potential Gradients
• Polar bosons in one-dimensional disordered optical lattices
• Bose-Einstein Condensate in Weak 3d Isotropic Speckle Disorder
• Lattice modulation spectroscopy of strongly interacting bosons in disordered and quasi-periodic optical lattices
• Bose systems in spatially random or time-varying potentials
• Tailoring Anderson localization by disorder correlations in 1D speckle potentials
• Finite-temperature properties of one-dimensional hard-core bosons in a quasiperiodic optical lattice
• Percolation Enhanced Supersolids in the Extended Bose-Hubbard Model
• Incoherence of Bose-Einstein condensates at supersonic speeds due to quantum noise
• Disorder Induced Vortex Lattice Melting in Bose-Einstein Condensate
• Fragmentation and the Bose-glass phase transition of the disordered 1D Bose gas
• Ground-state and dynamic properties of hard-core bosons in one-dimensional incommensurate optical lattices with harmonic trap
• Caustic formation in expanding condensates of cold atoms
• Nonlinear Schrodinger equation with chaotic, random, and nonperiodic nonlinearity
• Bosons in a double-well potential: Understanding the interplay between disorder and interaction in a simple model
• Effects of the Lee-Huang-Yang quantum corrections on a disordered dipolar Bose gas
• Observing the loss and revival of long-range phase coherence through disorder quenches
• Dissipative Transport of Trapped Bose-Einstein Condensates through Disorder
• Instanton theory for bosons in disordered speckle potential
• Thermalization and localization of an oscillating Bose-Einstein condensate in a disordered trap
• Make Slow Fast -- how to speed up interacting disordered matter
• Wavepacket Dynamics in Nonlinear Schrödinger Equations
• Dissipative dynamics of a harmonically confined Bose-Einstein condensate
• Dipole Oscillations of a Fermi Gas in a Disordered Trap: Damping and Localization
• Transport of Hubbard-Band Quasiparticles in Disordered Optical Lattices
• Effects of weak disorder on two-dimensional bilayered dipolar Bose-Einstein condensates
• Dynamics of harmonically confined systems: some rigorous results
• Localization landscape for interacting Bose gases in one-dimensional speckle potentials
• Localization of an inhomogeneous Bose-Einstein condensate in a moving random potential
• Provable bounds for the Korteweg-de Vries reduction in multi-component Nonlinear Schrodinger Equation
• Characterizing quantum gases in time-controlled disorder realizations using cross-correlations of density distributions
• Quench dynamics of disordered quadrupolar Bose-Einstein condensates
• One-Dimensional Disordered Bosonic Systems
• Self-energy functional theory with symmetry breaking for disordered lattice bosons
• Effective temperature of a superfluid flowing in a random potential
• Global and local condensate and superfluid fraction of a few hard core bosons in a cubic optical lattice plus external harmonic confinement
• Bose-Einstein condensates in disordered potentials
• Superfluid-insulator transition in weakly interacting disordered Bose gases: a kernel polynomial approach
• Effect of disorder on the interacting Fermi gases in a one-dimensional optical lattice
• Properties of bosons in a one-dimensional bichromatic optical lattice in the regime of the Sine-Gordon transition: a Worm Algorithm Monte Carlo study
• Dynamics of bright solitons and soliton arrays in the nonlinear Schrodinger equation with a combination of random and harmonic potentials
• Equilibrium and Non-equilibrium Gross-Pitaevskii Lattice Dynamics: Interactions, Disorder, and Thermalization