Quantum message exchanging network using entanglement swapping and decoy photons

Rui‐Chen Huang, Yu‐Guang Yang, Guang‐Bao Xu +3 more

Yangyu Wang, Yangming Zhao, Hongli Xu +2 more

Negin Fatahi, Mosayeb Naseri

We propose a scheme for secure quantum message exchanging network following the idea in entanglement swapping. In this scheme, the servers of the network provide the service for preparing the Greenberger-Horne-Zeilinger (GHZ) entangled states as quantum channels. For preventing the eavesdropping, a security checking method is suggested. After the security check, anyone of the authorized users can exchange his/her messages with another on the network securely and directly.   Key words: Quantum secure direct communication, entanglement swapping, quantum communication network PACS.

Sung Soon Jang, Hai-Woong Lee

Xinglan Zhang, Fei Chen, Yankun Guo +2 more

Dazu Huang, Ying Guo, Zeng Gui-Hua

A quantum secure direct intercommunication scheme is proposed to exchange directly the communicators' secret messages by making use of swapping entanglement of Bell states. It has great capacity to distribute the secret messages since these messages have been imposed on high-dimensional Bell states via the local unitary operations with superdense coding. The security is ensured by the secure transmission of the travel sequences and the application of entanglement swapping.