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Proceedings Paper

Quantum secure direct communication with frequency coding scheme
Author(s): Xue-Liang Zhao; Dong Ruan
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Paper Abstract

Quantum secure direct communication (QSDC) is an important branch of quantum cryptography. It can transmit secret information directly without establishing a key first, unlike quantum key distribution which requires this precursive event. One of the most highlighted QSDC protocol is the Two-step protocol. This paper will focus on proposing a frequency coding scheme in the Two-step protocol, while retaining other contents of the QSDC protocol. This new coding scheme will significantly increase the protocol’s ability against channel noise and loss, and provides an efficient protocol for secure direct quantum communication in a noisy environment. Besides, the frequency coding technology is also easy to understand and highly practical. After numerically simulating the performance of the protocol in a noisy channel, the results showed that the scheme was robust against channel noise and loss.

Paper Details

Date Published: 3 November 2016
PDF: 10 pages
Proc. SPIE 10029, Quantum and Nonlinear Optics IV, 1002914 (3 November 2016); doi: 10.1117/12.2245859
Show Author Affiliations
Xue-Liang Zhao, Tsinghua Univ. (China)
Dong Ruan, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 10029:
Quantum and Nonlinear Optics IV
Qihuang Gong; Guang-Can Guo; Byoung Seung Ham, Editor(s)

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