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arXiv 1409.8632quant-ph
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多体系统量子关联单偶的条件

Conditions for monogamy of quantum correlations in multipartite systems

Asutosh Kumar

摘要:

量子关联的一夫一妻制是一个充满活力的研究领域,因为它在量子信息的几个领域有潜在的应用,从量子密码学到多体物理学中的合作现象。在本文中,我们研究的条件下,一夫一妻制是保持量子相关措施的功能。我们证明了一夫一妻制的措施仍然是一夫一妻制的提高其权力,和一个非一夫一妻制的措施仍然是非一夫一妻制的降低其权力。我们还证明了在同一希尔伯特空间中,任意多体纯量子态的凸量子关联测度的单偶性导致其混合态的单偶性。混合态平方负性的一夫一妻制和形成纠缠的一夫一妻制是我们结果的推论。

英文摘要:

Monogamy of quantum correlations is a vibrant area of research because of its potential applications in several areas in quantum information ranging from quantum cryptography to co-operative phenomena in many-body physics. In this paper, we investigate conditions under which monogamy is preserved for functions of quantum correlation measures. We prove that a monogamous measure remains monogamous on raising its power, and a non-monogamous measure remains non-monogamous on lowering its power. We also prove that monogamy of a convex quantum correlation measure for arbitrary multipartite pure quantum state leads to its monogamy for mixed states in the same Hilbert space. Monogamy of squared negativity for mixed states and that of entanglement of formation follow as corollaries of our results.

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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