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

Shuai Zhao; Wen-Fei Cao; Yi-Zheng Zhen; Changchen Chen; Li Li; Nai-Le Liu; Feihu Xu; Kai Chen

doi:10.1088/1367-2630/ab4538

New Journal of Physics (Jan 2019)

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

Shuai Zhao,
Wen-Fei Cao,
Yi-Zheng Zhen,
Changchen Chen,
Li Li,
Nai-Le Liu,
Feihu Xu,
Kai Chen

Affiliations

Shuai Zhao: Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China , Hefei, Anhui 230026, People’s Republic of China; CAS Center for Excellence and Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China , Hefei, Anhui 230026, People’s Republic of China
Wen-Fei Cao: Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China , Hefei, Anhui 230026, People’s Republic of China; CAS Center for Excellence and Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China , Hefei, Anhui 230026, People’s Republic of China
Yi-Zheng Zhen: Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China , Hefei, Anhui 230026, People’s Republic of China; CAS Center for Excellence and Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China , Hefei, Anhui 230026, People’s Republic of China
Changchen Chen: Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, United States of America
Li Li: Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China , Hefei, Anhui 230026, People’s Republic of China; CAS Center for Excellence and Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China , Hefei, Anhui 230026, People’s Republic of China
Nai-Le Liu: Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China , Hefei, Anhui 230026, People’s Republic of China; CAS Center for Excellence and Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China , Hefei, Anhui 230026, People’s Republic of China
Feihu Xu: ORCiD; Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China , Hefei, Anhui 230026, People’s Republic of China; CAS Center for Excellence and Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China , Hefei, Anhui 230026, People’s Republic of China
Kai Chen: ORCiD; Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China , Hefei, Anhui 230026, People’s Republic of China; CAS Center for Excellence and Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China , Hefei, Anhui 230026, People’s Republic of China

DOI: https://doi.org/10.1088/1367-2630/ab4538
Journal volume & issue: Vol. 21, no. 10
p. 103008

Abstract

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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 (Śliwa 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.

Published in New Journal of Physics

ISSN: 1367-2630 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Science: Physics
Website: https://iopscience.iop.org/journal/1367-2630

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