| EPR纠缠光束时域量子关联的实验验证 |
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| 引用本文： | 靳晓丽,王宇,苏晓龙,彭堃墀.EPR纠缠光束时域量子关联的实验验证[J].量子光学学报,2009,15(2):95-100. |
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| 作者姓名： | 靳晓丽 王宇 苏晓龙 彭堃墀 |
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| 作者单位： | 量子光学与光量子器件国家重点实验室,山西大学光电研究所,山西,太原,030006 |
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| 基金项目： | 国家自然科学基金，高等学校博士点新教师专项科研基金，山西省青年科技研究基金 |
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| 摘 要： | 我们利用平衡零拍探测系统和数据采集系统直接测量了EPR纠缠光束信号光场与闲置光场正交分量之间的时域量子起伏,验证了其量子关联.通过对EPR纠缠光束中的一束光场进行延迟,验证了信号光与闲置光不同步时将导致量子关联减弱乃至消失.我们的实验结果为开展连续变量量子密钥分发、非高斯态的实验制备和纠缠纯化奠定了实验基础.
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| 关 键 词： | EPR纠缠 量子关联 非简并光学参量放大器 |
| 收稿时间： | 2009/1/30 |
Experimental Testing of Time-domain Quantum Correlation of EPR Entangled Beams |
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| JIN Xiao-li,WANG Yu,SU Xiao-long,PENG Kun-chi.Experimental Testing of Time-domain Quantum Correlation of EPR Entangled Beams[J].Acta Sinica Quantum Optica,2009,15(2):95-100. |
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| Authors: | JIN Xiao-li WANG Yu SU Xiao-long PENG Kun-chi |
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| Institution: | State Key Laboratory of Quantum Optics and Quantum Optics Devices;Institute of Opto-electronics;Shanxi University;Taiyuan 030006;China |
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| Abstract: | We measured the quantum fluctuations of the quadratures of signal and idler beams of EPR entangled beams in time domain directly by using the homodyne detection system and data acquisition system,and demonstrated intuitively the quantum correlations between two optical beams.By delaying one of the EPR entangled beams,we verify that if the measurements on the signal and the idler beams are not synchronal,the correlations between them will decrease and finally vanish.The presented experimental method can be u... |
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| Keywords: | EPR entanglement quantum correlation non-degenerate optical parametric amplifier |
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