The propagation characteristic of the EPR entanglement for a composite non-degenerate parametric optical amplification system

doi:10.1088/1674-1056/19/3/030312

中国物理B ›› 2010, Vol. 19 ›› Issue (3): 30312-030312.doi: 10.1088/1674-1056/19/3/030312

The propagation characteristic of the EPR entanglement for a composite non-degenerate parametric optical amplification system

谭维翰¹, 赵超樱²

(1)Department of Physics, Shanghai University, Shanghai 200444, China; (2)The College of Science, Hangzhou Dianzi University, Zhejiang 310018, China;The State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China

收稿日期:2008-11-23 修回日期:2009-03-02 出版日期:2010-03-15 发布日期:2010-03-15
基金资助:
Project supported by the Natural Science Foundation of Shanxi Province, China (Grant No.~2006011003).

The propagation characteristic of the EPR entanglement for a composite non-degenerate parametric optical amplification system

Zhao Chao-Ying(赵超樱)^a)b)† and Tan Wei-Han(谭维翰)^c)

^a The College of Science, Hangzhou Dianzi University, Zhejiang 310018, China; ^b The State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China^c Department of Physics, Shanghai University, Shanghai 200444, China

Received:2008-11-23 Revised:2009-03-02 Online:2010-03-15 Published:2010-03-15
Supported by:
Project supported by the Natural Science Foundation of Shanxi Province, China (Grant No.~2006011003).

摘要/Abstract

摘要： This paper applies the minimum variance V₁ criterion to monitor the evolution of signal and idler modes of a composite non-degenerate optical parametric amplification (NOPA) system. The analytics and numerical calculation show the influence of the transition time, the vacuum fluctuations, and the thermal noise level on the EPR entanglement of the composite NOPA system. It finds that the entanglement and the squeezing degrade as the minimum variance V₁ increases.

Abstract: This paper applies the minimum variance V₁ criterion to monitor the evolution of signal and idler modes of a composite non-degenerate optical parametric amplification (NOPA) system. The analytics and numerical calculation show the influence of the transition time, the vacuum fluctuations, and the thermal noise level on the EPR entanglement of the composite NOPA system. It finds that the entanglement and the squeezing degrade as the minimum variance V₁ increases.

Key words: EPR entanglement, composite non-degenerate optical parametric amplification, the Fokker--Planck equation

中图分类号: (Entanglement and quantum nonlocality)

03.65.Ud

42.50.Dv (Quantum state engineering and measurements) 42.65.Lm (Parametric down conversion and production of entangled photons) 42.65.Yj (Optical parametric oscillators and amplifiers)

赵超樱, 谭维翰. The propagation characteristic of the EPR entanglement for a composite non-degenerate parametric optical amplification system[J]. 中国物理B, 2010, 19(3): 30312-030312.

Zhao Chao-Ying(赵超樱) and Tan Wei-Han(谭维翰). The propagation characteristic of the EPR entanglement for a composite non-degenerate parametric optical amplification system[J]. Chin. Phys. B, 2010, 19(3): 30312-030312.

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The propagation characteristic of the EPR entanglement for a composite non-degenerate parametric optical amplification system

The propagation characteristic of the EPR entanglement for a composite non-degenerate parametric optical amplification system

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