Microscopic models of quantum jump super-operators
Quantum Physics
2009-11-11 v3
Abstract
We discuss the quantum jump operation in an open system, and show that jump super-operators related to a system under measurement can be derived from the interaction of that system with a quantum measurement apparatus. We give two examples for the interaction of a monochromatic electromagnetic field in a cavity (the system) with 2-level atoms and with a harmonic oscillator (representing two different kinds of detectors). We show that derived quantum jump super-operators have `nonlinear' form which depends on assumptions made about the interaction between the system and the detector. A continuous transition to the standard Srinivas--Davies form of the quantum jump super-operatoris shown.
Cite
@article{arxiv.quant-ph/0506118,
title = {Microscopic models of quantum jump super-operators},
author = {A. V. Dodonov and S. S. Mizrahi and V. V. Dodonov},
journal= {arXiv preprint arXiv:quant-ph/0506118},
year = {2009}
}