Cross-Domain Measurement-Device-Independent Quantum Anonymous Communications Based on Classical Blockchain
Runhua Shi, Xia-qin Fang · IEEE Transactions on Network Science and Engineering · 2025
How to guarantee the anonymity of the sender and the receiver is a fundamental privacy requirement in various novel applications. However, there are still some practically intractable problems to implement anonymous communications over long distances in current classical/quantum networks. In this paper, we first design a novel hybrid network architecture for cross-domain anonymous communications, which consists of multiple separated ring quantum networks combined with a classical blockchain (i.e., classical network). The hybrid network integrates good advantages of classical networks and quantum networks, especially in terms of security and privacy. Furthermore, we present two practical and feasible measurement-device-independent quantum anonymous communication protocols for transmitting (sharing) a classical message from a sender in one domain to a remote receiver (multiple remote receivers) in another domain based on the hybrid network. Compared with related protocols, proposed quantum protocols have better feasibility and scalability.