Disentanglement of Source and Target and the Laser Quantum State
Quantum Physics
2008-09-24 v1
Abstract
Disentanglement of a laser source from its target qubit is proposed as a criterion establishing the laser quantum state as a coherent state. It is shown that the source-target density operator has a unique factorization in coherent states when the environmental record monitoring laser pump quanta is ignored. The source-target state conditioned upon the complete environmental record is entangled, though, as a state of known total quanta number (source plus target).
Keywords
Cite
@article{arxiv.0712.3271,
title = {Disentanglement of Source and Target and the Laser Quantum State},
author = {Changsuk Noh and H. J. Carmichael},
journal= {arXiv preprint arXiv:0712.3271},
year = {2008}
}
Comments
4 pages, 1 figure