Amplitude squeezing of light by means of a phase-sensitive fiber parametric amplifier

被引：53

作者：

Levandovsky, D ^{[1
]}

Vasilyev, M ^{[1
]}

Kumar, P ^{[1
]}

机构：

[1] Northwestern Univ, Dept Elect & Comp Engn, Evanston, IL 60208 USA

来源：

OPTICS LETTERS | 1999年 / 24卷 / 14期

关键词：

D O I：

10.1364/OL.24.000984

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We experimentally demonstrate generation of bright sub-Poissonian light by means of parametric deamplification in a phase-sensitive fiber amplifier that is based on a balanced nonlinear Sagnac interferometer. On direct detection, the photocurrent noise falls below the shot-noise limit by (0.6 +/- 0.2) dB (1.4 dB when corrected for detection losses). To observe the noise reduction we employed a scheme that used two orthogonally polarized pulses to cancel the noise that arises from the predominantly polarized guided-acoustic-wave Brillouin scattering in the fiber. We also present a simplified semiclassical theory of quantum-noise suppression by this amplifier, which is found to be in good agreement with the experimental results. (C) 1999 Optical Society of America OCIS codes: 270.6570, 060.4370.

引用

页码：984 / 986

页数：3