Deterministic secure quantum communication and authentication protocol based on three-particle W state and quantum one-time pad

作者：Chang, Yan^*; Zhang, Shibin; Yan, Lili; Li, Jian

来源：Chinese Science Bulletin, 2014, 59(23): 2835-2840.

DOI：10.1007/s11434-014-0333-3

• Quantum secure communication
• Three-particle W state
• One-time Pad
• Authentication

Three-particle W states are used as decoy photons, and the eavesdropping detection rate reaches 63 %. The positions of decoy photons in information sequence are encoded with identity string ID of the legitimate users. Authentication is implemented by using previously shared identity string. State is used as the carrier. One photon of is sent to Bob; and Bob obtains a random key by measuring photons with bases dominated by ID. The bases information is secret to others except Alice and Bob. Both the eavesdropping detection based on three-particle W state and the secret ID ensure the security of the protocol. Unitary operations are not used.

• 出版日期2014-8
• 单位北京邮电大学; 成都信息工程大学