2005/04/14 by Chun-Yan Li, Chunyan Li, Hong-Yu Zhou +3 · 1 citation
Computer Science · Mathematics · Physics and Astronomy · #Bell state #Computer network #Computer science #Computer security #Eavesdropping #Key (lock) #Mathematics #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum cryptography #Quantum entanglement #Quantum information #Quantum key distribution #Quantum mechanics #Quantum network #Qubit #Scheme (mathematics) #Superdense coding #Theoretical computer science #Unitary state #quant-ph
paper · pdf · doi:10.1088/0256-307x/22/5/006
published as Chinese Physics Letters 22, 1049-1052 (2005) · 5 pages, 2 figures. The decoy-photon technique is presented in a clear way for preventing a potentially dishonest server on a network from eavesdropping quantum communication freely. This technique may be useful in quantum secret sharing (of classical information or quantum information), controlled teleportation, and so on
openalex publication_date 2005/04/14 · arxiv created 2007/05/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We propose a theoretical scheme for secure quantum key distribution network following the ideas in quantum dense coding. In this scheme, the server of the network provides the service for preparing and measuring the Bell states, and the users encode the states with local unitary operations. For preventing the server from eavesdropping, we design a decoy when the particle is transmitted between the users. The scheme has high capacity as one particle carries two bits of information and its efficiency for qubits approaches 100%. Moreover, it is unnecessary for the users to store the quantum states, which makes this scheme more convenient in applications than others.