Asymptotic population imbalance of an ultracold bosonic ensemble in a driven double-well
arXiv:2006.14678 · doi:10.1103/PhysRevA.102.033302
Abstract
We demonstrate that an ultracold many-body bosonic ensemble confined in an one-dimensional (1D) double well potential exhibits a population imbalance between the two wells at large timescales, when the depth of the wells are modulated by a time-dependent driving force. The specific form of the driving force is shown to break spatial parity and time-reversal symmetries, which leads to such an asymptotic population imbalance (API). The value of the API can be flexibly controlled by changing the phase of the driving force and the total number of particles. While the API is highly sensitive to the initial state in the few-particle regime, this dependence on the initial state is lost as we approach the classical limit of large particle numbers. We perform a Floquet analysis in the few-particle regime and an analysis based on a driven classical non-rigid pendulum in the many-particle regime. Although the obtained API values in the many-particle regime agree very well with that obtained in the classical limit, we show that there exists a significant disagreement in the corresponding real-time population imbalance due to quantum correlations.
arXiv comment13 pages, 5 figures
References in corpus (45)
- Many-Body Physics with Ultracold Gases
- Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
- Feshbach Resonances in Ultracold Gases
- Atomic Scattering in Presence of an External Confinement and a Gas of Impenetrable Bosons
- Observation of resonance condensation of fermionic atom pairs
- Direct Observation of Tunneling and Nonlinear Self-Trapping in a single Bosonic Josephson Junction
- Quantum Coherent Atomic Tunneling between Two Trapped Bose-Einstein Condensates
- Condensation of Pairs of Fermionic Atoms Near a Feshbach Resonance
- Atomic quantum gases in periodically driven optical lattices
- Production of cold molecules via magnetically tunable Feshbach resonances
- Transition from a strongly interacting 1D superfluid to a Mott insulator
- Squeezing and entanglement in a Bose-Einstein condensate
- Driven quantum transport on the nanoscale
- Superfluid-insulator transition in a periodically driven optical lattice
- The Mott insulator transition in two dimensions
- Classical bifurcation at the transition from Rabi to Josephson dynamics
- Directed current due to broken time-space symmetry
- Coherent control of dressed matter waves
- Floquet engineering with quasienergy bands of periodically driven optical lattices
- Directed Transport of Atoms in a Hamiltonian Quantum Ratchet
- Classical and Quantum Hamiltonian Ratchets
- Phase-control of directed diffusion in a symmetric optical lattice
- Reduced density matrices and coherence of trapped interacting bosons
- Tunable transport with broken space-time symmetries
- Few-boson dynamics in double wells: From single-atom to correlated-pair tunneling
- Many-Body Coherent Destruction of Tunneling
- Periodically driven Quantum Ratchets: Symmetries and Resonances
- Dynamic generation of spin-squeezed states in bosonic Josephson junctions
- Ultracold Few-Boson Systems in a Double-Well Trap
- Correlations in Ultracold Trapped Few-Boson Systems: Transition from Condensation to Fermionization
- Tunneling dynamics of few bosons in a double well
- Quantum dynamics of attractive versus repulsive bosonic Josephson junctions: Bose-Hubbard and full-Hamiltonian results
- Quantum chaos and entanglement in ergodic and non-ergodic systems
- Universality of Fragmentation in the Schrödinger Dynamics of Bosonic Josephson Junctions
- Ratchet-Induced Segregation and Transport of Non-Spherical Grains
- Coherent ratchets in driven Bose-Einstein condensates
- Inter-species Tunneling in One-dimensional Bose Mixtures
- Two-dimensional rocking ratchet for cold atoms
- Floquet analysis of the modulated two-mode Bose-Hubbard model
- Simultaneous control of multi-species particle transport and segregation in driven lattices
- Few-boson tunneling in a double well with spatially modulated interaction
- Analysis of interface conversion processes of ballistic and diffusive motion in driven superlattices
- Formation of density waves via interface conversion of ballistic and diffusive motion
- Freezing, accelerating and slowing directed currents in real time with superimposed driven lattices
- Symmetries and transport in site-dependently driven quantum lattices
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