Chin. Phys. B
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Chin. Phys. B  2011, Vol. 20 Issue (10): 100309    DOI: 10.1088/1674-1056/20/10/100309
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A two-step quantum secure direct communication protocol with hyperentanglement
Gu Bina, Zhang Cheng-Yia, Huang Yu-Gaib, Fang Xiab
a College of Mathematics and Physics, Nanjing University of Information Science and Technology, Nanjing 210044, China; The Photonic Technology Laboratory, Nanjing University of Information Science and Technology, Nanjing 210044, China; b Jiangsu Institute of Education, Nanjing 210013, China

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