Chaos and two-level dynamics of the atomtronic quantum interference device

We study the atomtronic quantum interference device employing a semiclassical perspective. We consider an M 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 chaos-assisted tunneling. We...

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Bibliographic Details
Published in:New journal of physics 2016-01, Vol.18 (1), p.15007
Main Authors: Arwas, Geva, Cohen, Doron
Format: Article
Language:English
Subjects:
atomtronics
Bose-Hubbard
Circuits
Interference
Physics
quantum chaos
Rabi oscillations
superfluid circuit
System effectiveness
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Summary:We study the atomtronic quantum interference device employing a semiclassical perspective. We consider an M 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 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.
ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/18/1/015007