Periodically-driven cold atoms: the role of the phase

Abstract

Numerous theoretical and experimental studies have investigated the dynamics of cold atoms subjected to time periodic fields. Novel effects dependent on the amplitude and frequency of the driving field, such as Coherent Destruction of Tunneling have been identified and observed. However, in the last year or so, three distinct types of experiments have demonstrated for the first time, interesting behaviour associated with the driving phase: i.e. for systems experiencing a driving field of general form $V(x)\sin (\omega t+\varphi )$, different types of large scale oscillations and directed motion were observed. We investigate and explain the phenomenon of Super-Bloch Oscillations (SBOs) in relation to the other experiments and address the role of initial phase in general. We analyse and compare the role of $\varphi$ in systems with homogeneous forces ($V^{\prime }(x)=const$), such as cold atoms in shaken or amplitude-modulated optical lattices, as well as non-homogeneous forces ($V^{\prime }(x)\ne const$), such as the sloshing of atoms in driven traps, and clarify the physical origin of the different $\varphi$-dependent effects.

10 pages, 1 figure

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Cited by in corpus (42)

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• Periodically-driven quantum systems: Effective Hamiltonians and engineered gauge fields
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• Ultrafast and Anharmonic Rabi Oscillations between Non-Bloch-Bands
• Kilohertz-driven Bose-Einstein condensates in optical lattices
• Directed transport in driven optical lattices by phase generation
• Generalized acceleration theorem for spatiotemporal Bloch waves
• Drive-induced many-body localization and coherent destruction of Stark many-body localization
• Floquet oscillations in periodically driven Dirac systems
• Swallowtail Band Structure of the Superfluid Fermi Gas in an Optical Lattice
• Visual observation of optical Floquet-Bloch oscillations
• Backaction-Driven Transport of Bloch Oscillating Atoms in Ring Cavities
• Floquet analysis of the modulated two-mode Bose-Hubbard model
• Generation of uniform synthetic magnetic fields by split driving of an optical lattice
• Dynamical localization and slow dynamics in quasiperiodically-driven quantum systems
• Effective Hamiltonians for fastly driven tight-binding chains
• Sudden death of particle-pair Bloch oscillation and unidirectional propagation in a one-dimensional driven optical lattice
• Bloch-like super-oscillations and unidirectional motion of phase driven quantum walkers
• Characteristic length scales from entanglement dynamics in electric-field-driven tight-binding chains
• `Muhammad Ali effect' and incoherent destruction of Wannier-Stark localization in a stochastic field
• Dynamics of one-dimensional tight-binding models with arbitrary time-dependent external homogeneous fields
• Super Bloch Oscillation in a PT symmetric system
• Fractional photon-assisted tunnelling of ultra-cold atoms in periodically shaken double-well lattices
• Rapidly-oscillating scatteringless non-Hermitian potentials and the absence of Kapitza stabilization
• Dynamical Control in a Quasi-periodically Modulated Optical Lattice
• Klein tunneling of two correlated bosons
• Transport controlled by Poincaré orbit topology in a driven inhomogeneous lattice gas
• Bloch-like energy oscillations
• Noise-induced dynamical localization and delocalization
• Quantum entanglement and drifting generated by an AC field resonant with frequency-doubled Bloch oscillations of correlated particles
• Directed transport in a classical lattice with a high-frequency driving
• Two-doublon Bloch oscillations in the mass-imbalanced extended Fermi-Hubbard model
• An optomechanical elevator: Transport of a Bloch oscillating Bose-Einstein condensate up and down an optical lattice by cavity sideband amplification and cooling
• Converting Zitterbewegung Oscillation to Directed Motion
• Rabi-Bloch Oscillations in Spatially Distributed Systems: Temporal Dynamics and Frequency Spectra
• Quantum metrology with Bloch Oscillations in Floquet phase space
• Cat states in a driven superfluid: role of signal shape and switching protocol
• Effective time-reversal via periodic shaking
• Chirped Bloch-Harmonic oscillations in a parametrically forced optical lattice
• Distinguishing mesoscopic quantum superpositions from statistical mixtures in periodically shaken double wells
• Continued fraction analysis of dressed systems: application to periodically driven optical lattices
• Quantum transport under oscillatory drive with disordered amplitude