2021/04/30 by Hua-Lei Yin, Jie Gu, Yuan-Mei Xie +6
Computer Science · Physics and Astronomy · #Channel (broadcasting) #Computer network #Computer science #Computer security #Fidelity #Interference (communication) #Key (lock) #Multipartite #Physics #Protocol (science) #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum channel #Quantum cryptography #Quantum entanglement #Quantum information #Quantum information science #Quantum key distribution #Quantum mechanics #Quantum network #Telecommunications #Transmission (telecommunications) #quant-ph
paper · pdf · doi:10.1364/oe.440365
published as Opt. Express 29, 32244 (2021) · 8 pages, 5 figures
openalex publication_date 2021/09/16 · arxiv created 2021/09/23 · arxiv updated 2021/09/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Quantum secret sharing (QSS) is an essential primitive for the future quantum internet, which promises secure multiparty communication. However, developing a large-scale QSS network is a huge challenge due to the channel loss and the requirement of multiphoton interference or high-fidelity multipartite entanglement distribution. Here, we propose a three-user QSS protocol without monitoring signal disturbance, which is capable of ensuring the unconditional security. The final key rate of our protocol can be demonstrated to break the Pirandola-Laurenza-Ottaviani-Banchi bound of quantum channel and its simulated transmission distance can approach over 600 km using current techniques. Our results pave the way to realizing high-rate and large-scale QSS networks.