The linear stochastic Schrodinger equation of a cavity mode subject to a homodyne measurement and to a phase-sensitive feedback loop realized with part of the output homodyne photocurrent is derived. We show that quantum feedback has stabilizing effects which manifest themselves in a significant retardation of the decoherence of a Schrodinger-cat state.
Effect of feedback on the decoherence of a Schrödinger cat state: a quantum trajectory description
TOMBESI, Paolo;VITALI, David
1996-01-01
Abstract
The linear stochastic Schrodinger equation of a cavity mode subject to a homodyne measurement and to a phase-sensitive feedback loop realized with part of the output homodyne photocurrent is derived. We show that quantum feedback has stabilizing effects which manifest themselves in a significant retardation of the decoherence of a Schrodinger-cat state.File in questo prodotto:
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