Dynamics of Open Bosonic Quantum Systems in Coherent State Representation

Details Dynamics of Open Bosonic Quantum Systems in Coherent State Representation Dynamics of Open Bosonic Quantum Systems in Coherent State Representation

2006-01-10

arxiv.org/abs/quant-ph/0601063v1

Phys. Rev. A 73, 013803 (2006)

Physics

Quantum Physics

7 pages

Scientific paper

10.1103/PhysRevA.73.013803

We consider the problem of decoherence and relaxation of open bosonic quantum systems from a perspective alternative to the standard master equation or quantum trajectories approaches. Our method is based on the dynamics of expectation values of observables evaluated in a coherent state representation. We examine a model of a quantum nonlinear oscillator with a density-density interaction with a collection of environmental oscillators at finite temperature. We derive the exact solution for dynamics of observables and demonstrate a consistent perturbation approach.

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