A quantum encryption scheme usingd-level systems
Fen-Zhuo Guo, Gao Fei, Wen Qiao-yan, Fu-Chen Zhu · Chinese Physics · 2006
Using the generalized Bell states and quantum gates, we introduce a quantum encryption scheme of d -level states (qudits). The scheme can detect and correct arbitrary transmission errors using only local operations and classical communications between the communicators. In addition, the entanglement key used to encrypt can be recycled. The protocol is informationally secure, because the output state is a totally mixed one for every input state ρ.