Wigner Function Evolution of Quantum States in Presence of Self-Kerr Interaction

Details Wigner Function Evolution of Quantum States in Presence of Self-Kerr Interaction Wigner Function Evolution of Quantum States in Presence of Self-Kerr Interaction

2006-05-18

arxiv.org/abs/quant-ph/0605166v4

Phys. Rev. A 78, 013810 (2008)

Physics

Quantum Physics

10 pages, 11 figures

Scientific paper

10.1103/PhysRevA.78.013810

A Fokker-Planck equation for the Wigner function evolution in a noisy Kerr medium ($\chi^{(3)}$ non-linearity) is presented. We numerically solved this equation taking a coherent state as an initial condition. The dissipation effects are discussed. We provide examples of quantum interference, sub-Planck phase space structures, and Gaussian versus non-Gaussian dynamical evolution of the state. The results also apply to the description of a nanomechanical resonator with an intrinsic Duffing nonlinearity.

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