Noiseless optical amplification of images

被引：119

作者：

Choi, SK ^{[1
]}

Vasilyev, M ^{[1
]}

Kumar, P ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.83.1938

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We used a spatially broadband optical parametric amplifier for image amplification. In the phase-sensitive configuration of the amplifier, we observed noiseless amplification of input images. For a gain of similar or equal to 2.5, we measured noise-figure values of (0.2 +/- 0.6) and (0.4 +/- 0.5) dB, respectively, for two amplifiers of different lengths. These experimental values agree with theory (for an ideal noiseless amplifier the noise figure is 0 dB) and are almost 2 dB lower than the quantum limit of an ideal phase-insensitive amplifier.

引用

页码：1938 / 1941

页数：4

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