Continuous variable entanglement enhancement and manipulation by a subthreshold Type II optical parametric amplifier

被引：26

作者：

Shang, Yana ^{[1
]}

Jia, Xiaojun ^{[1
]}

Shen, Yumei ^{[1
]}

Xie, Changde ^{[1
]}

Peng, Kunchi ^{[1
]}

机构：

[1] Shanxi Univ, State Key Lab Quantum Opt & Quantum Opt Devices, Inst Optoelect, Taiyuan 030006, Peoples R China

来源：

OPTICS LETTERS | 2010年 / 35卷 / 06期

基金：

中国国家自然科学基金;

关键词：

PODOLSKY-ROSEN PARADOX;

D O I：

10.1364/OL.35.000853

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We experimentally demonstrate that the quantum entanglement between amplitude and phase quadratures of optical modes produced from a nondegenerate optical parametric amplifier (NOPA) can be enhanced and manipulated phase sensitively by means of another NOPA. When both NOPAs operate at deamplification, the entanglement degree is increased at the cavity resonance of the second NOPA. When the first NOPA operates at deamplification and the second one at amplification, the spectral features of the correlation variances are significantly changed. The experimental results are in good agreement with the theoretical expectation. (c) 2010 Optical Society of America

引用

页码：853 / 855

页数：3

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