Nowadays, quantum internet has drawn much attention from people all over the world since it holds numerous advantages over the classical internet in distributing, sharing, and processing information. Theoretically, quantum internet consists of quantum networks whose robust security is guaranteed by quantum communication. In the realm of quantum communication, besides quantum key distribution which has been well developed, multiparty quantum communication and multiparty quantum cryptography still contribute an unignorable part since they can be used for unique cryptographic tasks. For example, quantum secret sharing is a cryptographic primitive used for multiparty quantum communication in quantum internet, which aims to split a secret message into several parts in such a way that any unauthorized subset of players cannot reconstruct the message. In the past several decades, quantum communication and quantum cryptography in the multiparty scenario shows huge significance in the wide implementation of quantum internet.
The realm of multiparty quantum communication and quantum cryptography consists of different quantum cryptographic primitives such as quantum secret sharing, quantum conference key agreement, quantum digital signatures, and quantum voting. Thus, there exist numerous problems remaining to be settled. For example, how to establish unconditional theoretical security for various cryptographic primitives in the multiparty scenario; how to implement multiparty quantum communication protocols experimentally with high efficiency (high key rate, long distance, low cost); how to prove their security with imperfect realistic devices; how to implement multiparty quantum communication based on quantum entanglement or whether preparation and transmission of quantum entangled states can be avoided. We believe that these bottlenecks can be overcome through this Research Topic to make a breakthrough in multiparty quantum communication and quantum cryptography.
As listed below, this Research Topic will focus on, but not be limited to, the following areas in both the theoretical and experimental studies:
• Quantum secret sharing;
• Quantum digital signatures;
• Quantum consensus and byzantine fault tolerance;
• Multiparticle entanglement distribution;
• Quantum voting;
• Quantum conference key agreement;
• Multiparty quantum secure direct communication;
• Multiuser quantum network.
Nowadays, quantum internet has drawn much attention from people all over the world since it holds numerous advantages over the classical internet in distributing, sharing, and processing information. Theoretically, quantum internet consists of quantum networks whose robust security is guaranteed by quantum communication. In the realm of quantum communication, besides quantum key distribution which has been well developed, multiparty quantum communication and multiparty quantum cryptography still contribute an unignorable part since they can be used for unique cryptographic tasks. For example, quantum secret sharing is a cryptographic primitive used for multiparty quantum communication in quantum internet, which aims to split a secret message into several parts in such a way that any unauthorized subset of players cannot reconstruct the message. In the past several decades, quantum communication and quantum cryptography in the multiparty scenario shows huge significance in the wide implementation of quantum internet.
The realm of multiparty quantum communication and quantum cryptography consists of different quantum cryptographic primitives such as quantum secret sharing, quantum conference key agreement, quantum digital signatures, and quantum voting. Thus, there exist numerous problems remaining to be settled. For example, how to establish unconditional theoretical security for various cryptographic primitives in the multiparty scenario; how to implement multiparty quantum communication protocols experimentally with high efficiency (high key rate, long distance, low cost); how to prove their security with imperfect realistic devices; how to implement multiparty quantum communication based on quantum entanglement or whether preparation and transmission of quantum entangled states can be avoided. We believe that these bottlenecks can be overcome through this Research Topic to make a breakthrough in multiparty quantum communication and quantum cryptography.
As listed below, this Research Topic will focus on, but not be limited to, the following areas in both the theoretical and experimental studies:
• Quantum secret sharing;
• Quantum digital signatures;
• Quantum consensus and byzantine fault tolerance;
• Multiparticle entanglement distribution;
• Quantum voting;
• Quantum conference key agreement;
• Multiparty quantum secure direct communication;
• Multiuser quantum network.
