One-step quantum secure direct communication

作     者：Yu-Bo Sheng Lan Zhou Gui-Lu Long 盛宇波;周澜;龙桂鲁

作者机构：College of Electronic and Optical Engineering&College of MicroelectronicsNanjing University of Posts and TelecommunicationsNanjing 210003China School of ScienceNanjing University of Posts and TelecommunicationsNanjing 210003China Department of PhysicsTsinghua UniversityBeijing 100084China State Key Laboratory of Low-Dimensional Quantum PhysicsTsinghua UniversityBeijing 100084China Beijing National Research Center for Information Science and TechnologyBeijing 100084China Beijing Academy of Quantum Information SciencesBeijing 100193China Institute of Quantum Information and TechnologyNanjing University of Posts and TelecommunicationsNanjing 210003China 

基　　金：supported by the National Natural Science Foundation of China(11974189,11974205,and 12175106) the Key Area Research and Development Program of Guangdong Province(2018B030325002) the National Key Research and Development Program of China(2017YFA0303700) 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2022年第67卷第4期

页      码：367-374,M0003页

摘      要：Quantum secure direct communication(QSDC)attracts much attention for it can transmit secret messages directly without sharing a *** this article,we propose a one-step QSDC protocol,which only requires to distribute polarization-spatial-mode hyperentanglement for one *** this QSDC protocol,the eavesdropper cannot obtain any message,so that this protocol is unconditionally secure in *** protocol is a two-way quantum communication and has high capacity for it can transmit two bits of secret messages with one pair of *** entanglement fidelities of both polarization and spatial-mode degrees of freedom being 0.98,the maximal communication distance of this onestep QSDC can reach about 216 *** can also be used to generate the *** this regard,the key generation rate is estimated about 2.5 times of that in the entanglement-based QKD with the communication distance of 150 *** the help of future quantum repeaters,this QSDC protocol can provide unconditionally secure communication over arbitrarily long distance.

主 题 词：Quantum secure direct communication Hyperentanglement Nonlocal Bell-state analysis 

学科分类：11[军事学] 1105[1105] 07[理学] 0839[0839] 08[工学] 070201[070201] 110505[110505] 110503[110503] 0702[理学-物理学类] 

核心收录：

D　O　I：10.1016/j.scib.2021.11.002

馆 藏 号：203106346...