| Eavesdropping on the＇ping-pong＇ quantum communication protocol freely in a noise channel |
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| 引用本文： | 邓富国,李熙涵,李春燕,周萍,周宏余.Eavesdropping on the＇ping-pong＇ quantum communication protocol freely in a noise channel[J].中国物理 B,2007,16(2):277-281. |
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| 作者姓名： | 邓富国 李熙涵 李春燕 周萍 周宏余 |
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| 作者单位： | The Key Laboratory of Beam Technology and
Material Modification of Ministry of Education, Beijing Normal
University, Beijing 100875, China;Institute of Low Energy Nuclear Physics, and Department
of Material Science and Engineering, Beijing Normal University,
Beijing 100875, China;Beijing Radiation Center, Beijing 100875, China;The Key Laboratory of Beam Technology and
Material Modification of Ministry of Education, Beijing Normal
University, Beijing 100875, China;Institute of Low Energy Nuclear Physics, and Department
of Material Science and Engineering, Beijing Normal University,
Beijing 100875, China;The Key Laboratory of Beam Technology and
Material Modification of Ministry of Education, Beijing Normal
University, Beijing 100875, China;Institute of Low Energy Nuclear Physics, and Department
of Material Science and Engineering, Beijing Normal University,
Beijing 100875, China;The Key Laboratory of Beam Technology and
Material Modification of Ministry of Education, Beijing Normal
University, Beijing 100875, China;Institute of Low Energy Nuclear Physics, and Department
of Material Science and Engineering, Beijing Normal University,
Beijing 100875, China;The Key Laboratory of Beam Technology and
Material Modification of Ministry of Education, Beijing Normal
University, Beijing 100875, China;Institute of Low Energy Nuclear Physics, and Department
of Material Science and Engineering, Beijing Normal University,
Beijing 100875, China;Beijing Radiation Center, Beijing 100875, China |
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| 基金项目： | Project supported by the
National Natural Science Foundation of China (Grant No 10604008)
and the
Beijing Education Committee (Grant No XK100270454). |
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| 摘 要： | We introduce an attack scheme for eavesdropping freely the ping-pong
quantum communication protocol proposed by Bostr\"{o} m and Felbinger
Phys. Rev. Lett. 89, 187902 (2002)] in a noise channel.
The vicious eavesdropper, Eve, intercepts and measures the travel
photon transmitted between the sender and the receiver. Then she
replaces the quantum signal with a multi-photon signal in the same
state, and measures the returned photons with the measuring basis,
with which Eve prepares the fake signal except for one photon. This
attack increases neither the quantum channel losses nor the error
rate in the sampling instances for eavesdropping check. It works for
eavesdropping the secret message transmitted with the ping-pong
protocol. Finally, we propose a way for improving the security of
the ping-pong protocol.
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| 关 键 词： | 量子通信 乒乓协议 干扰信道 偷听 |
| 收稿时间： | 2006-05-15 |
| 修稿时间： | 2006-05-152006-06-14 |
Eavesdropping on the `ping-pong' quantum communication protocol freely in a noise channel |
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| Deng Fu-Guo,Li Xi-Han,Li Chun-Yan,Zhou Ping and Zhou Hong-Yu.Eavesdropping on the `ping-pong' quantum communication protocol freely in a noise channel[J].Chinese Physics B,2007,16(2):277-281. |
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| Authors: | Deng Fu-Guo Li Xi-Han Li Chun-Yan Zhou Ping and Zhou Hong-Yu |
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| Affiliation: | The Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Beijing Normal University, Beijing 100875, China; Institute of Low Energy Nuclear Physics, and Department of Material Science and Engineering, Beijing Normal University, Beijing 100875, China; Beijing Radiation Center, Beijing 100875, China |
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| Abstract: | We introduce an attack scheme for eavesdropping freely the ping-pong
quantum communication protocol proposed by Bostr\"{o} m and Felbinger
Phys. Rev. Lett. 89, 187902 (2002)] in a noise channel.
The vicious eavesdropper, Eve, intercepts and measures the travel
photon transmitted between the sender and the receiver. Then she
replaces the quantum signal with a multi-photon signal in the same
state, and measures the returned photons with the measuring basis,
with which Eve prepares the fake signal except for one photon. This
attack increases neither the quantum channel losses nor the error
rate in the sampling instances for eavesdropping check. It works for
eavesdropping the secret message transmitted with the ping-pong
protocol. Finally, we propose a way for improving the security of
the ping-pong protocol. |
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| Keywords: | quantum communication ping-pong protocol eavesdropping |
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