Volume 129, Number 1, January 2020
|Number of page(s)||4|
|Published online||14 February 2020|
Security proof of the two-way quantum secure direct communication with channel loss and noise
State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, and Collaborative Innovation Center of Extreme Optics, Shanxi University - Taiyuan 030006, China
Received: 31 October 2019
Accepted: 15 January 2020
Quantum secure direct communication is one of the major branches of quantum cryptography, which sends secret information through a quantum channel directly without setting up a prior key. Over the past decade, numerous protocols have been proposed, and some of them have been experimentally demonstrated. The two-way protocol is seen as one of the most practical protocol; in this paper, we present the security proof of the two-way quantum secure direct communication protocol when the noisy and lossy channel is taken into account.
PACS: 03.67.Hk – Quantum communication / 03.67.-a – Quantum information / 03.67.Dd – Quantum cryptography and communication security
© EPLA, 2020
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