Comparing the efficiencies of different detect strategies in the ping-pong protocol |
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| Authors: | Fei Gao FenZhuo Guo QiaoYan Wen FuChen Zhu |
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| Institution: | (1) State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, 100876, China;(2) School of Sciences, Beijing University of Posts and Telecommunications, Beijing, 100876, China;(3) National Laboratory for Modern Communications, Chengdu, 610041, China |
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| Abstract: | The way to compare the efficiencies of different detect strategies (DSs) in the “ping-pong” protocol is studied. The trade-off
between information gain and disturbance is calculated and compared for different DSs. The comparison result primely tallies
with our intuitional analysis. It is shown that the analysis of this trade-off is a feasible way to compare the performances
of different DSs in theory.
Supported by the National High Technology Research and Development Program of China (Grant No. 2006AA01Z419), the National
Natural Science Foundation of China (Grant Nos. 90604023 and 6087319), the National Laboratory for Modern Communications Science
Foundation of China (Grant No. 9140C1101010601), the Natural Science Foundation of Beijing (Grant No. 4072020), and the ISN
Open Foundation. |
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| Keywords: | quantum key distribution quantum cryptography quantum secure direct communication |
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