Dynamical tunneling of a Bose-Einstein condensate in periodically driven systems

Abstract

We report measurements of dynamical tunneling rates of a Bose-Einstein condensate across a barrier in classical phase space. The atoms are initially prepared in quantum states that extend over a classically regular island region. We focus on the specific system of quantum accelerator modes of the kicked rotor in the presence of gravity. Our experimental data is supported by numerical simulations taking into account imperfections mainly from spontaneous emission. Furthermore, we predict experimentally accessible parameter ranges over which direct tunneling could be readily observed if spontaneous emission was further suppressed. Altogether, we provide a proof-of-principle for the experimental accessibility of dynamical tunneling rates in periodically driven systems.

Improved version

References in corpus (7)

• Chaos-assisted directional light emission from microcavity lasers
• Dynamical tunneling in mushroom billiards
• Exploring the phase space of the quantum delta kicked accelerator
• Regular-to-chaotic tunneling rates using a fictitious integrable system
• The role of quasi-momentum in the resonant dynamics of the atom-optics kicked rotor
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Cited by in corpus (13)

• Quantum Walk in Momentum Space with a Bose-Einstein Condensate
• A quantum random walk of a Bose-Einstein condensate in momentum space
• Experimental Observation of Resonance-Assisted Tunneling
• Observation of resonance-assisted dynamical tunneling in an asymmetric microcavity
• Initial state dependence of a quantum-resonance ratchet
• Steering random walks with kicked ultracold atoms
• Nonlinear Floquet dynamics of spinor condensates in an optical cavity: Cavity-amplified parametric resonance
• Quantum search with a continuous-time quantum walk in momentum space
• Applications of fidelity measures to complex quantum systems
• Spontaneous Emission in Quantum Walks of a Kicked Bose-Einstein Condensate
• Quasiparticle tunneling in a periodically driven bosonic Josephson junction
• Emergence and destruction of macroscopic wave functions
• Spontaneous-emission induced ratchet in atom-optics kicked rotor quantum walks