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arXiv quant-ph/0311015quant-ph
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三方量子态共享

Tripartite Quantum State Sharing

Andrew M. Lance, Thomas Symul, Warwick P. Bowen, Barry C. Sanders, Ping Koy Lam

摘要:

我们证明了一个多方协议,安全地分配和重建一个量子态。一个秘密的量子态被编码成一个三方纠缠态,并被分配给三个参与者。三个玩家中的任何两个都可以重建状态,而单个玩家什么也得不到。我们从保真度、信号传输和重构噪声等方面对这种(2,3)阈值量子态共享方案进行了表征。我们证明了在所有重建排列上的平均保真度为0.73,这是仅使用量子资源才能实现的。

英文摘要:

We demonstrate a multipartite protocol to securely distribute and reconstruct a quantum state. A secret quantum state is encoded into a tripartite entangled state and distributed to three players. Any two of the three players are able to reconstruct the state, whilst individual players obtain nothing. We characterize this (2,3) threshold quantum state sharing scheme in terms of fidelity, signal transfer and reconstruction noise. We demonstrate a fidelity averaged over all reconstruction permutations of 0.73, which is achievable only using quantum resources.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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