Chin. Phys. Lett.  2004, Vol. 21 Issue (12): 2340-2342    DOI:
Original Articles |
Cai--Li Communication Protocol in Noisy Quantum Channel
Lü Hua1;YAN Xu-Dong1;ZHANG Xian-Zhou2
1Department of Mathematics and Physics, Hubei Polytechnic University, Wuhan 430068 2Department of Physics, Henan Normal University, Xinxiang 453000
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Lü Hua, YAN Xu-Dong, ZHANG Xian-Zhou 2004 Chin. Phys. Lett. 21 2340-2342
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Abstract Since the original Cai--Li protocol [Chin. Phys. Lett. 21(2004)601] can be used only in an ideal quantum communication, we present the modified Cai--Li protocol that can be used in the a noisy quantum channel by using Calderbank--Shor--Steane (CSS) codes to correct errors. We also give a tight bound on the connection between information Eve eavesdropped with a measurement attack in line B → A and detection probability, which shows that the Cai--Li protocol can be used as a quasisecure direct quantum communication.
Keywords: 03.67.Dd      03.67.Hk      03.67.-a     
Published: 01 December 2004
PACS:  03.67.Dd (Quantum cryptography and communication security)  
  03.67.Hk (Quantum communication)  
  03.67.-a (Quantum information)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2004/V21/I12/02340
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