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arXiv 0907.5519quant-ph
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利用Schmidt数对非定域双量子比特门进行分类

Classification of nonlocal two-qubit gates using Schmidt number

S Balakrishnan, Leona J Felicia, R Sankaranarayanan

摘要:

由Schmidt分解可知,非定域两量子比特量子门的Schmidt数为2或4。我们确定条件的几何点的门有施密特数2。一个简单的分析表明,施密特数2对应于控制酉门与CNOT是唯一的完美纠缠。此外,它表明,施密特强度和纠缠功率是最大的控制酉家庭中的CNOT。

英文摘要:

It is known from Schmidt decomposition that Schmidt number of nonlocal two-qubit quantum gates is 2 or 4. We identify conditions on geometrical points of a gate to have Schmidt number 2. A simple analysis reveals that Schmidt number 2 corresponds to controlled unitary gates with CNOT being the only perfect entangler. Further, it is shown that Schmidt strength and entangling power are maximum only for CNOT in the controlled unitary family.

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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