Physical Review Letters

Description of Quantum Noise by a Langevin Equation

Horia I. Metiu, Gerd Schön

Published Jul 2, 1984• 43 citations

Abstract

We derive an equation of motion for a fully observed classical system which is coupled to a quantum companion whose degrees of freedom are only partially observed. Our purpose is to discuss the nature of the quantum noise by using a generalization of the Langevin equation.

DOI: 10.1103/physrevlett.53.13

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