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arXiv quant-ph/9805002quant-ph
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量子计算中的量子化问题

The Initialization Problem in Quantum Computing

Subhash Kak

摘要:

研究了量子计算系统中的相位初始化问题。相位的初始化是一个问题,当系统最初存在于一个纠缠态,也在应用的量子门变换,因为每个门将引入相位不确定性。这些随机相位的累积将降低最近提出的量子计算方案的有效性。本文还提出了一般性的意见,量子错误的非局部性质和预期的性能建议的量子纠错码的基础上的错误是位翻转或相位翻转或两者兼而有之的假设。有人认为,这些代码不能直接解决量子计算的初始化问题。

英文摘要:

The problem of initializing phase in a quantum computing system is considered. The initialization of phases is a problem when the system is initially present in an entangled state and also in the application of the quantum gate transformations since each gate will introduce phase uncertainty. The accumulation of these random phases will reduce the effectiveness of the recently proposed quantum computing schemes. The paper also presents general observations on the nonlocal nature of quantum errors and the expected performance of the proposed quantum error-correction codes that are based on the assumption that the errors are either bit-flip or phase-flip or both. It is argued that these codes cannot directly solve the initialization problem of quantum computing.

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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