Does excess quantum noise exist in spontaneous processes?

被引：4

作者：

Aiello, A ^{[1
]}

van Exter, MP ^{[1
]}

Nienhuis, G ^{[1
]}

Woerdman, JP ^{[1
]}

机构：

[1] Leiden Univ, Huygens Lab, NL-2300 RA Leiden, Netherlands

来源：

OPTICS COMMUNICATIONS | 2002年 / 213卷 / 1-3期

关键词：

excess noise; spontaneous parametric down-conversion;

D O I：

10.1016/S0030-4018(02)01995-8

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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. (C) 2002 Published by Elsevier Science B.V.

引用

页码：81 / 87

页数：7

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