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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, Chinac Department of Physics, Shanghai University, Shanghai 200444, China |
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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.
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Received: 23 November 2008
Revised: 02 March 2009
Accepted manuscript online:
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PACS:
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03.65.Ud
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(Entanglement and quantum nonlocality)
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42.50.Dv
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(Quantum state engineering and measurements)
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42.65.Lm
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(Parametric down conversion and production of entangled photons)
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42.65.Yj
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(Optical parametric oscillators and amplifiers)
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| Fund: Project supported by the Natural
Science Foundation of Shanxi Province, China (Grant
No.~2006011003). |
Cite this article:
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 2010 Chin. Phys. B 19 030312
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