Effect of the dispersion on multipartite continuous-variable entanglement in optical parametric amplifier

doi:10.1088/1674-1056/24/4/040302

›› 2015, Vol. 24 ›› Issue (4): 40302-040302.doi: 10.1088/1674-1056/24/4/040302

Effect of the dispersion on multipartite continuous-variable entanglement in optical parametric amplifier

赵超樱^{a b}

a College of Science, Hangzhou Dianzi University, Hangzhou 310018, China;
b State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China

收稿日期:2014-09-11 修回日期:2014-10-23 出版日期:2015-04-05 发布日期:2015-04-05
基金资助:
Project supported by the State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan 030006, China (Grant No. KF201401) and the National Natural Science Foundation of China (Grant No. 11404084).

Effect of the dispersion on multipartite continuous-variable entanglement in optical parametric amplifier

Zhao Chao-Ying (赵超樱)^{a b}

a College of Science, Hangzhou Dianzi University, Hangzhou 310018, China;
b State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China

Received:2014-09-11 Revised:2014-10-23 Online:2015-04-05 Published:2015-04-05
Contact: Zhao Chao-Ying E-mail:zchy49@hdu.edu.cn
Supported by:
Project supported by the State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan 030006, China (Grant No. KF201401) and the National Natural Science Foundation of China (Grant No. 11404084).

摘要/Abstract

摘要： Based on the quantum fluctuations, we adopt the method of generalized V₁ criterion to investigate multipartite entanglement characteristics in an optical parametric amplification system with the consideration of dispersion. The nonlinear interaction becomes strong because of the existence of dispersion coefficient σ. Considering the influence of dispersion factor σ, with increasing the pump parameter μ, the value of minimum variance V₁ decreases and the squeezing curve nearly equals 1/(1 + μ). The larger particle number N results in a smaller variance and higher entanglement.

关键词: dispersion, multipartite entanglement, optical parametric amplifier

Abstract: Based on the quantum fluctuations, we adopt the method of generalized V₁ criterion to investigate multipartite entanglement characteristics in an optical parametric amplification system with the consideration of dispersion. The nonlinear interaction becomes strong because of the existence of dispersion coefficient σ. Considering the influence of dispersion factor σ, with increasing the pump parameter μ, the value of minimum variance V₁ decreases and the squeezing curve nearly equals 1/(1 + μ). The larger particle number N results in a smaller variance and higher entanglement.

Key words: dispersion, multipartite entanglement, optical parametric amplifier

中图分类号: (Entanglement and quantum nonlocality)

03.65.Ud

42.50.Lc (Quantum fluctuations, quantum noise, and quantum jumps) 42.65.Yj (Optical parametric oscillators and amplifiers)

赵超樱. Effect of the dispersion on multipartite continuous-variable entanglement in optical parametric amplifier[J]. , 2015, 24(4): 40302-040302.

Zhao Chao-Ying (赵超樱). Effect of the dispersion on multipartite continuous-variable entanglement in optical parametric amplifier[J]. Chin. Phys. B, 2015, 24(4): 40302-040302.

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Effect of the dispersion on multipartite continuous-variable entanglement in optical parametric amplifier

Effect of the dispersion on multipartite continuous-variable entanglement in optical parametric amplifier

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