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arXiv 2108.11533quant-ph
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量子马尔可夫一夫一妻制不等式

Quantum Markov monogamy inequalities

Matheus Capela, Lucas C. Céleri, Rafael Chaves, Kavan Modi

摘要:

Markovianity是沟通问题的核心。这反过来又使得马尔可夫过程的信息理论表征是有价值的。数据处理不等式在这个意义上是普遍存在的,为所有马尔可夫过程分配必要条件。我们在这里解决的问题的信息理论分析的限制马尔可夫过程中的量子制度。我们证明了一类新的量子数据处理不等式的存在,这里称为量子马尔可夫一夫一妻制不等式。量子马尔可夫过程的这类新的必要条件受到经典马尔可夫过程的启发,从而在经典和量子马尔可夫性约束之间提供了强有力的联系。我们继续构建一个家庭的多时间量子马尔可夫一夫一妻制不等式,基于过程张量形式主义,利用多时间相关性。然后,我们表明,通过一个明确的例子,马尔可夫一夫一妻制不等式可以比通常的量子数据处理不等式更强。

英文摘要:

Markovianity lies at the heart of communication problems. This in turn makes the information-theoretic characterization of Markov processes worthwhile. Data processing inequalities are ubiquitous in this sense, assigning necessary conditions for all Markov processes. We address here the problem of the information-theoretic analysis of constraints on Markov processes in the quantum regime. We show the existence of a novel class of quantum data processing inequalities called here quantum Markov monogamy inequalities. This new class of necessary conditions on quantum Markov processes is inspired by its counterpart for classical Markov processes, and thus providing a strong link between classical and quantum constraints on Markovianity. We go on to construct a family of multitime quantum Markov monogamy inequalities, based on the process tensor formalism and that exploits multitime correlations. We then show, by means of an explicit example, that the Markov monogamy inequalities can be stronger than the usual quantum data processing inequalities.

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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