Physics – Quantum Physics
Scientific paper
2007-03-17
Quant. Inf. Comput. 10, 28 (2010)
Physics
Quantum Physics
Published version
Scientific paper
Analyzing carefully an experimentally feasible non-entangled single qubit quantum secret sharing protocol and its modified version [Phys. Rev. Lett. 95, 230505 (2005); ibid. 98, 028902 (2007)], it is found that both versions are insecure against coherent attacks though the original idea is so remarkable. To overcome this fatal flaw, here we propose a protocol with a distinct security checking strategy, which still involves single qubit operations only, making it possible to achieve better security of quantum secret sharing with current technology.
He Guang Ping
Wang Zheng-Dong
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