| A realizable quantum encryption algorithm for qubits |
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| 作者姓名： | 周南润 曾贵华 |
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| 作者单位： | The State Key Laboratory on Fiber-Optic Local Area Networks and Advanced Optical Communication Systems, Electronic Engineering Department, Shanghai Jiaotong University, Shanghai 200030, China;The State Key Laboratory on Fiber-Optic Local Area Networks and Advanced Optical Communication Systems, Electronic Engineering Department, Shanghai Jiaotong University, Shanghai 200030, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant Nos 60472018 and 90104005) and by the Doctoral Programs Foundation of the Ministry of Education of China (Grant No 20020247063). |
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| 摘 要： |
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| 关 键 词： | 量子编码算法 量子计算 密码系统 系统扩展 计算机安全 |
| 收稿时间： | 2004-10-15 |
| 修稿时间： | 2004-10-152005-05-20 |
A realizable quantum encryption algorithm for qubits |
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| Zhou Nan-Run and Zeng Gui-Hua.A realizable quantum encryption algorithm for qubits[J].Chinese Physics B,2005,14(11):2164-2169. |
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| Authors: | Zhou Nan-Run and Zeng Gui-Hua |
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| Institution: | The State Key Laboratory on Fiber-Optic Local Area Networks and Advanced Optical Communication Systems, Electronic Engineering Department, Shanghai Jiaotong University, Shanghai 200030, China |
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| Abstract: | A realizable quantum encryption algorithm for qubits is presented by employing bit-wise quantum computation. System extension and bit-swapping are introduced into the encryption process, which makes the ciphertext space expanded greatly. The security of the proposed algorithm is analysed in detail and the schematic physical implementation is also provided. It is shown that the algorithm, which can prevent quantum attack strategy as well as classical attack strategy, is effective to protect qubits. Finally, we extend our algorithm to encrypt classical binary bits and quantum entanglements. |
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| Keywords: | quantum encryption algorithm quantum computation cryptography |
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