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arXiv quant-ph/0701122quant-ph
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六维中最大互无偏基数的数值证据

Numerical evidence for the maximum number of mutually unbiased bases in dimension six

Paul Butterley, William Hall

摘要:

自引入量子信息理论以来,确定六维空间中最大互无偏基个数的问题一直受到人们的关注,但至今仍没有一个确定的答案.本文摒弃传统的解析方法,采用数值方法来确定这个个数.我们在数值上最小化一组N+1个正交基的非负函数在D维,只有评估为零,如果基地是相互无偏的。结果,我们发现了强有力的证据,(正如在其他地方所证明的那样)在第六维中不超过三个相互无偏的基础。

英文摘要:

The question of determining the maximal number of mutually unbiased bases in dimension six has received much attention since their introduction to quantum information theory, but a definitive answer has still not been found. In this paper we move away from the traditional analytic approach and use a numerical approach to attempt to determine this number. We numerically minimise a non-negative function of a set of N+1 orthonormal bases in dimension d which only evaluates to zero if the bases are mutually unbiased. As a result we find strong evidence that (as has been conjectured elsewhere) there are no more than three mutually unbiased bases in dimension six.

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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