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arXiv 0811.4588quant-phmath-phmath.MP
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信道不确定性下纠缠的传输和产生:通用量子信道编码

Entanglement transmission and generation under channel uncertainty: Universal quantum channel coding

I. Bjelakovic, H. Boche, J. Noetzel

摘要:

我们确定了在信道不确定性条件下通用量子码的最佳纠缠传输和纠缠产生速率。在最简单的情况下,发送者和接收者仅被提供他们使用的信道属于给定信道集合的信息,使得他们被迫使用对于整个信道集合都可靠的量子码。这正是复合信道编码问题的量子模拟。我们确定了复合量子信道的纠缠传输能力和纠缠产生能力,并证明了它们是相等的。此外,我们调查了两个变种的基本情况下,即知情的解码器或知情的编码器的情况下,并得出相应的容量结果。

英文摘要:

We determine the optimal rates of universal quantum codes for entanglement transmission and generation under channel uncertainty. In the simplest scenario the sender and receiver are provided merely with the information that the channel they use belongs to a given set of channels, so that they are forced to use quantum codes that are reliable for the whole set of channels. This is precisely the quantum analog of the compound channel coding problem. We determine the entanglement transmission and entanglement-generating capacities of compound quantum channels and show that they are equal. Moreover, we investigate two variants of that basic scenario, namely the cases of informed decoder or informed encoder, and derive corresponding capacity results.

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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