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Sci Rep. 2016 Jun 30;6:28767. doi: 10.1038/srep28767.

One Step Quantum Key Distribution Based on EPR Entanglement.

Li J1,2, Li N1,3, Li LL1, Wang T1.

Author information

1
School of Computer Science, Beijing University of Posts and Telecommunications, Beijing 100876, China.
2
Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
3
JiLin Medical University, Jilin, 132013, China.

Abstract

A novel quantum key distribution protocol is presented, based on entanglement and dense coding and allowing asymptotically secure key distribution. Considering the storage time limit of quantum bits, a grouping quantum key distribution protocol is proposed, which overcomes the vulnerability of first protocol and improves the maneuverability. Moreover, a security analysis is given and a simple type of eavesdropper's attack would introduce at least an error rate of 46.875%. Compared with the "Ping-pong" protocol involving two steps, the proposed protocol does not need to store the qubit and only involves one step.

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