AUTHOR=Zhou Ziyi , Wang Yifei , Dou Zhao , Li Jian , Chen Xiubo , Li Lixiang 

TITLE=A (t, n) threshold protocol of semi-quantum secret sharing based on single particles

JOURNAL=Frontiers in Physics

VOLUME=Volume 11 - 2023

YEAR=2023

URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2023.1225059

DOI=10.3389/fphy.2023.1225059

ISSN=2296-424X

ABSTRACT=Semi-quantum secret sharing is an important research issue in quantum cryptography.We combine the practicality of semi-quantum secret sharing protocols and the flexibility of (t, n) threshold quantum secret sharing protocols and propose a (t, n) threshold semi-quantum secret sharing in this paper. Our protocol has some features: (i) it can enable any t of the n participants to recover the secret, which makes our protocol more flexible; (ii) all participants use single particles which are easy to be prepared as quantum resources; (iii) classical participants only need to possess the capability to prepare and insert particles, so they are released from other quantum abilities in our protocol. The proposed protocol has security against most attacks. Also, except decoy particles, all particles are useful to carry the secret message, so the efficiency of the proposed protocol can achieve 100%.