Effect of feedback on the decoherence of a Schrödinger-cat state: A quantum trajectory description

1 November 1996

journal article
Published by American Physical Society (APS) in Physical Review A

Vol. 54 (5) , 4519-4527
https://doi.org/10.1103/physreva.54.4519

Abstract

The linear stochastic Schrödinger 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 Schrödinger-cat state. © 1996 The American Physical Society.

Keywords

QUANTUM FLUCTUATION
FEEDBACK LOOP
QUANTUM NOISE

This publication has 1 reference indexed in Scilit:

An Open Systems Approach to Quantum Optics
Published by Springer Nature ,1993