A realizable quantum encryption algorithm for qubits

作者：Zhou, NR^*; Zeng, GH

来源：Chinese Physics, 2005, 14(11): 2164-2169.

DOI：10.1088/1009-1963/14/11/004

• quantum encryption algorithm
• quantum computation
• cryptography

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.

• 出版日期2005-11
• 单位上海交通大学