Quantum Secure Direct Communication Network with Two-Step Protocol

2006 ◽  
Vol 23 (5) ◽  
pp. 1080-1083 ◽  
Author(s):  
Li Xi-Han ◽  
Zhou Ping ◽  
Liang Yu-Jie ◽  
Li Chun-Yan ◽  
Zhou Hong-Yu ◽  
...  
Keyword(s):  
Communication Network ◽  
Quantum Secure Direct Communication ◽  
Direct Communication

scholarly journals Economical quantum secure direct communication network with single photons

2007 ◽  
Vol 16 (12) ◽  
pp. 3553-3559 ◽  
Author(s):  
Deng Fu-Guo ◽  
Li Xi-Han ◽  
Li Chun-Yan ◽  
Zhou Ping ◽  
Zhou Hong-Yu
Keyword(s):  
Communication Network ◽  
Quantum Secure Direct Communication ◽  
Single Photons ◽  
Direct Communication

scholarly journals Quantum secure direct communication network with superdense coding and decoy photons

2007 ◽  
Vol 76 (1) ◽  
pp. 25-30 ◽  
Author(s):  
Fu-Guo Deng ◽  
Xi-Han Li ◽  
Chun-Yan Li ◽  
Ping Zhou ◽  
Hong-Yu Zhou
Keyword(s):  
Communication Network ◽  
Quantum Secure Direct Communication ◽  
Direct Communication ◽  
Superdense Coding

scholarly journals A 15-user quantum secure direct communication network

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Zhantong Qi ◽  
Yuanhua Li ◽  
Yiwen Huang ◽  
Juan Feng ◽  
Yuanlin Zheng ◽  
...  
Keyword(s):  
Communication Network ◽  
Optical Fiber ◽  
Quantum Secure Direct Communication ◽  
Entangled States ◽  
Entangled State ◽  
Practical Application ◽  
Long Distance ◽  
Direct Communication ◽  
Sum Frequency ◽  
Fully Connected

AbstractQuantum secure direct communication (QSDC) based on entanglement can directly transmit confidential information. However, the inability to simultaneously distinguish the four sets of encoded entangled states limits its practical application. Here, we explore a QSDC network based on time–energy entanglement and sum-frequency generation. In total,15 users are in a fully connected QSDC network, and the fidelity of the entangled state shared by any two users is >97%. The results show that when any two users are performing QSDC over 40 km of optical fiber, the fidelity of the entangled state shared by them is still >95%, and the rate of information transmission can be maintained above 1 Kbp/s. Our result demonstrates the feasibility of a proposed QSDC network and hence lays the foundation for the realization of satellite-based long-distance and global QSDC in the future.

scholarly journals Quantum secure direct communication network with Einstein–Podolsky–Rosen pairs

2006 ◽  
Vol 359 (5) ◽  
pp. 359-365 ◽  
Author(s):  
Fu-Guo Deng ◽  
Xi-Han Li ◽  
Chun-Yan Li ◽  
Ping Zhou ◽  
Hong-Yu Zhou
Keyword(s):  
Communication Network ◽  
Quantum Secure Direct Communication ◽  
Direct Communication ◽  
Einstein Podolsky Rosen

Quantum secure direct communication network with hyperentanglement

2014 ◽  
Vol 23 (9) ◽  
pp. 090309 ◽  
Author(s):  
Chang Ho Hong ◽  
Jino Heo ◽  
Jong In Lim ◽  
Hyung Jin Yang
Keyword(s):  
Communication Network ◽  
Quantum Secure Direct Communication ◽  
Direct Communication
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