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arXiv 1012.0386quant-phmath-phmath.MP
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通过连续测量获得Holevo界

Achieving the Holevo bound via sequential measurements

Vittorio Giovannetti, Seth Lloyd, Lorenzo Maccone

摘要:

我们提出了一种新的解码过程来传输经典信息的量子信道,渐近饱和的Holevo界,实现最佳的通信线路的速率。与先前的提议不同,它基于执行一系列(投射的)是/否测量,其在N个步骤中确定发送器发送了哪个码字(N是码字的数量)。我们的分析表明,只要N是低于由Holevo界施加的限制的错误概率可以被发送到零的码字的长度渐近。

英文摘要:

We present a new decoding procedure to transmit classical information in a quantum channel which, saturating asymptotically the Holevo bound, achieves the optimal rate of the communication line. Differently from previous proposals, it is based on performing a sequence of (projective) YES/NO measurements which in N steps determines which codeword was sent by the sender (N being the number of the codewords). Our analysis shows that as long as N is below the limit imposed by the Holevo bound the error probability can be sent to zero asymptotically in the length of the codewords.

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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