Chaos and two-level dynamics of the Atomtronic Quantum Interference Device
arXiv:1510.04438 · doi:10.1088/1367-2630/18/1/015007
Abstract
We study the Atomtronics Quantum Interference Device employing a semiclassical perspective. We consider an site ring that is described by the Bose-Hubbard Hamiltonian. Coherent Rabi oscillations in the flow of the current are feasible, with an enhanced frequency due to to chaos-assisted tunneling. We highlight the consequences of introducing a weak-link into the circuit. In the latter context we clarify the phase-space considerations that are involved in setting up an effective "systems plus bath" description in terms of Josephson-Caldeira-Leggett Hamiltonian.
21 pages, 8 figures
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- Atomtronics-enabled Quantum Technologies
- Superfluidity in Bose-Hubbard circuits
- Thermalization and its Breakdown for a Large Nonlinear Spin
- Challenges and constraints of dynamically emerged source and sink in atomtronic circuits: From closed-system to open-system approaches
- Effects of a rotating periodic lattice on coherent quantum states in a ring topology: The case of positive nonlinearity
- Resonant persistent currents for ultracold bosons on a lattice ring
- Tunable quantum switcher and router of cold atom matter waves using artificial magnetic fields
- Chaos induced breakdown of Bose-Hubbard modeling
- Rotation Sensitive Quench and Revival of Coherent Oscillations in a Ring Lattice
- Quasistatic transfer protocols for atomtronic superfluid circuits
- Entangled Collective Spin States of Two Species Ultracold atoms in a Ring
- Quantum irreversibility of quasistatic protocols for finite-size quantized systems
- Chaos onset in large rings of Bose-Einstein condensates
- Chaos, Metastability and Ergodicity in Bose-Hubbard Superfluid Circuits