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arXiv 0912.3744quant-ph
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通过最大秩的噪声信道实现量子态的忠实传输需要隐形传态

Teleportation is necessary for faithful quantum state transfer through noisy channels of maximal rank

Raffaele Romano, Peter van Loock

摘要:

量子隐形传态可以实现量子态的确定性和可靠性传输,前提是在发送者和接收者之间预先共享一个最大纠缠态,并提供单向经典信道.在这里,我们证明了这些资源不仅是足够的,而且是必要的,确定性和忠实地发送量子态通过任何固定的噪声信道的最大秩,当一个单一的使用信道被接纳。换句话说,对于这个信道族,没有其他基于不同(可能更便宜)资源集的协议能够取代量子隐形传态。

英文摘要:

Quantum teleportation enables deterministic and faithful transmission of quantum states, provided a maximally entangled state is pre-shared between sender and receiver, and a one-way classical channel is available. Here, we prove that these resources are not only sufficient, but also necessary, for deterministically and faithfully sending quantum states through any fixed noisy channel of maximal rank, when a single use of the cannel is admitted. In other words, for this family of channels, there are no other protocols, based on different (and possibly cheaper) sets of resources, capable of replacing quantum teleportation.

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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