Does Excess Quantum Noise Exist in Spontaneous Processes?
Quantum Physics
2009-11-07 v1
Abstract
We investigate the role of excess quantum noise in type-II degenerate parametric down conversion in a cavity with non-orthogonal polarization eigenmodes. Since only two modes are involved we are able to derive an analytical expression for the twin-photon generation rate measured outside the cavity as a function of the degree of mode nonorthogonality. Contrary to recent claims we conclude that there is no evidence of excess quantum noise for a parametric amplifier working so far below threshold that spontaneous processes dominate.
Cite
@article{arxiv.quant-ph/0206042,
title = {Does Excess Quantum Noise Exist in Spontaneous Processes?},
author = {A. Aiello and M. P. van Exter and G. Nienhuis and J. P. Woerdman},
journal= {arXiv preprint arXiv:quant-ph/0206042},
year = {2009}
}
Comments
7 pages, 3 figure in the text. Submitted to Optics Communications