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arXiv quant-ph/0103162quant-ph
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互无偏基存在性的一个新证明

A new proof for the existence of mutually unbiased bases

Somshubhro Bandyopadhyay, P. Oscar Boykin, Vwani Roychowdhury, Farrokh Vatan

摘要:

我们建立了正交酉矩阵的极大可换基与互无偏基之间的强联系。对任意有限维,得到了互无偏基存在的一个必要条件。然后构造性地证明了素数的幂维数的互无偏基的存在性。还证明了在任意维数d上,互无偏基的个数至多为d+1。对于d=2^m,给出了用泡利矩阵表示的相互无偏观测量的显式表示。

英文摘要:

We develop a strong connection between maximally commuting bases of orthogonal unitary matrices and mutually unbiased bases. A necessary condition of the existence of mutually unbiased bases for any finite dimension is obtained. Then a constructive proof of the existence of mutually unbiased bases for dimensions which are power of a prime is presented. It is also proved that in any dimension d the number of mutually unbiased bases is at most d+1. An explicit representation of mutually unbiased observables in terms of Pauli matrices are provided for d=2^m.

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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