A consistent quantum model for continuous photodetection processes
Quantum Physics
2009-11-10 v1
Abstract
We are modifying some aspects of the continuous photodetection theory, proposed by Srinivas and Davies [Optica Acta 28, 981 (1981)], which describes the non-unitary evolution of a quantum field state subjected to a continuous photocount measurement. In order to remedy inconsistencies that appear in their approach, we redefine the `annihilation' and `creation' operators that enter in the photocount superoperators. We show that this new approach not only still satisfies all the requirements for a consistent photocount theory according to Srinivas and Davies precepts, but also avoids some weird result appearing when previous definitions are used.
Cite
@article{arxiv.quant-ph/0307089,
title = {A consistent quantum model for continuous photodetection processes},
author = {M. C. de Oliveira and S. S. Mizrahi and V. V. Dodonov},
journal= {arXiv preprint arXiv:quant-ph/0307089},
year = {2009}
}
Comments
12 pages, 4 figures