Filtering equation for a measurement of a coherent channel
Quantum Physics
2015-06-05 v1
Abstract
A stochastic model for a continuous photon counting and heterodyne measurement of a coherent source is proposed. A nonlinear filtering equation for the posterior state of a single-mode field in a cavity is derived by using the methods of quantum stochastic calculus. The posterior dynamics is found for the observation of a Bose field being initially in a coherent state. The filtering equations for counting and diffusion processes are given.
Keywords
Cite
@article{arxiv.1207.1196,
title = {Filtering equation for a measurement of a coherent channel},
author = {A. Dabrowska and P. Staszewski},
journal= {arXiv preprint arXiv:1207.1196},
year = {2015}
}
Comments
14 pages, 1 figure. This paper was published in JOSA B. The final version is available on OSA website