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arXiv quant-ph/0508129quant-ph
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关于N个量子比特的互无偏基集的结构

On the structure of the sets of mutually unbiased bases for N qubits

J. L. Romero, G. Bjork, A. B. Klimov, L. L. Sanchez-Soto

摘要:

对于一个N个量子比特的系统,跨越维度d=2^N的希尔伯特空间,已知存在d+1个相互无偏基。存在不同的构造算法,并且就可分性而言,不同的方法导致具有不同性质的基集合。在这里,我们推导出三个量子比特的四组九个基,并展示它们是如何幺正相关的。我们还简要地讨论了四量子比特的情况,给出了16组基的纠缠结构,并展示了其中的一些,以及它们之间的相互关系,作为例子。的方法的扩展到一般情况下的N量子比特的概述。

英文摘要:

For a system of N qubits, spanning a Hilbert space of dimension d=2^N, it is known that there exists d+1 mutually unbiased bases. Different construction algorithms exist, and it is remarkable that different methods lead to sets of bases with different properties as far as separability is concerned. Here we derive the four sets of nine bases for three qubits, and show how they are unitarily related. We also briefly discuss the four-qubit case, give the entanglement structure of sixteen sets of bases,and show some of them, and their interrelations, as examples. The extension of the method to the general case of N qubits is outlined.

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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