Higher amounts of loophole-free Bell violation using a heralded entangled source

被引：3
|
作者：
Zhao, Shuai [1 ,2 ,3 ]
Cao, Wen-Fei [1 ,2 ,3 ]
Zhen, Yi-Zheng [1 ,2 ,3 ]
Chen, Changchen [4 ]
Li, Li [1 ,2 ,3 ]
Liu, Nai-Le [1 ,2 ,3 ]
Xu, Feihu [1 ,2 ,3 ]
Chen, Kai [1 ,2 ,3 ]
机构：
[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China
[2] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China
[3] Univ Sci & Technol China, CAS Ctr Excellence & Synerget Innovat Ctr Quantum, Hefei 230026, Anhui, Peoples R China
[4] MIT, Elect Res Lab, Cambridge, MA 02139 USA
来源：
NEW JOURNAL OF PHYSICS | 2019年 / 21卷 / 10期
基金：
中国国家自然科学基金;
关键词：
quantum key distribution; loophole-free Bell tests; heralded entangled source; device-independent quantum information processing; INEQUALITY; PHOTONS;
D O I：
10.1088/1367-2630/ab4538
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Loophole-free Bell non-locality test plays a central role in device-independent quantum information processing tasks, such as device-independent quantum random number generation (QRNG) and quantum key distribution (QKD). Inspired by the scheme of heralded spontaneous parametric down conversion (SPDC) source proposed in (liwa C and Banaszek K 2003 Phys. Rev. A 67 030101), we present a loophole-free Bell test scheme that employs the heralded type of entangled photon pairs. Our proposal enables a much higher degree of Bell violation with realistic photonic devices over the one using the conventional SPDC source, thus allowing the implementation of device-independent QRNG and QKD with significant advantages. We anticipate that the scheme will enable variously subtle applications in device-independent quantum information processing tasks.
引用
收藏
页数：11
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