Open Access

ARTICLE

Device-Independent Quantum Key Distribution Protocol Based on Hyper-Entanglement

Yan Chang^{1, *}, Shibin Zhang¹, Lili Yan¹, Xueyang Li¹, Tian Cao¹, Qirun Wang²

1 College of Information Security Engineering, Chengdu University of Information Technology, Chengdu, China.
2 School of Engineering and Technology, University of Hertfordshire, Hertford, UK.

* Corresponding Author: Yan Chang. Email: .

Computers, Materials & Continua 2020, 65(1), 879-896. https://doi.org/10.32604/cmc.2020.010042

Received 06 February 2020; Accepted 03 May 2020; Issue published 23 July 2020

Abstract

The secure key rate of quantum key distribution (QKD) is greatly reduced because of the untrusted devices. In this paper, to raise the secure key rate of QKD, a device-independent quantum key distribution (DIQKD) protocol is proposed based on hyper-entangled states and Bell inequalities. The security of the protocol is analyzed against the individual attack by an adversary only limited by the no-signaling condition. Based on the formalization of Clauser-Horne Shimony-Holt (CHSH) violation measurement on local correlation, the probability of a secure secret bit is obtained, which is produced by a pair of hyper-entangled particles. By analyzing the secure secret bit, it is proven that, when both the polarization mode and the path mode contains entangledstates, the DIQKD protocol gets a better secure key rate than common Bell states.

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Keywords

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