Quantum stochastic resonance in the strong-field limit

Numerical path integral calculations are performed to study the behavior of a dissipative two-level system driven by a strong monochromatic oscillatory field. It is shown that the population of an initially localized state displays persistent high-frequency oscillations at weak dissipation and low t...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2004-10, Vol.70 (4), Article 042101
Main Authors: Dong, Ke, Makri, Nancy
Format: Article
Language:English
Subjects:
AMPLITUDES
ATOMIC AND MOLECULAR PHYSICS
MONOCHROMATIC RADIATION
OPTICS
OSCILLATIONS
PATH INTEGRALS
QUANTUM MECHANICS
RESONANCE
STOCHASTIC PROCESSES
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Summary:Numerical path integral calculations are performed to study the behavior of a dissipative two-level system driven by a strong monochromatic oscillatory field. It is shown that the population of an initially localized state displays persistent high-frequency oscillations at weak dissipation and low temperature. The oscillation amplitudes exhibit intricate patterns as the field parameters are varied. The observed behavior is an extension of the quantum stochastic resonance phenomenon outside the weak-field regime.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.70.042101