Browsing by Author "FAGNOLA, F"

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    QUANTUM FLOWS ASSOCIATED TO MASTER-EQUATIONS IN QUANTUM OPTICS
    (AMER INST PHYSICS, 1994) FAGNOLA, F; REBOLLEDO, R; SAAVEDRA, C
    A stochastic dilation of master equation for a maser is constructed using the technique of quantum stochastic differential equations with unbounded operator coefficients. The associated quantum Markov flow is characterized and turns out to extend a classical birth and death process. Furthermore, the stationary distribution of the aforementioned process, which is connected to the stationary state of the micromaser, is obtained in a closed form.
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    THE APPROACH TO EQUILIBRIUM BY MEANS OF QUANTUM FLOWS
    (1995) FAGNOLA, F; REBOLLEDO, R
    Suppose given a quantum dynamical semigroup (T-t;t greater than or equal to 0) for which a faithful normal state rho exists. This Note gives sufficient conditions for the w*-convergence of the semigroup to (trp .)I as t-->infinity, where I is the identity operator.