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arXiv quant-ph/9910028quant-ph
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双态隐形传态

Two-state teleportation

L. Henderson, L. Hardy, V. Vedral

摘要:

与完全未知态的隐形传态相比,具有关于输入态的附加先验信息的量子隐形传态实现了更高的保真度。然而,两个非正交输入状态的完美隐形传态需要与未知状态的完美隐形传态相同的纠缠量,即一个ebit。我们分析了如何以及两个状态的隐形传态可以实现使用每一个程度的纯态纠缠,并讨论了保真度的“隐形传态”,可以实现只有经典通信,但没有共享纠缠。构造了一个两态遥克隆方案。

英文摘要:

Quantum teleportation with additional a priori information about the input state achieves higher fidelity than teleportation of a completely unknown state. However, perfect teleportation of two non-orthogonal input states requires the same amount of entanglement as perfect teleportation of an unknown state, namely one ebit. We analyse how well two-state teleportation can be achieved using every degree of pure-state entanglement, and discuss the fidelity of `teleportation' that can be achieved with only classical communication but no shared entanglement. A two-state telecloning scheme is constructed.

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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