State Systems
نویسنده
چکیده
The Brownian dynamics of the density operator for a quantum system interacting with a classical heat bath is described using a stochas-tic, non-linear Liouville equation obtained from a variational principle. The rate of the noise-induced transitions is expressed as a function of the environmental spectral density, and is discussed for the case of white noise and blackbody radiation. The timescale of decoherence and dissipation is obtained numerically for a system of two quantum states. These are the ground and first excited state of the center of mass vibrations for a single ion confined in a harmonic trap.
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تاریخ انتشار 1997