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arXiv 2406.06360quant-ph
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非马尔可夫量子信念传播

Non-Markov quantum belief propagation

Jack Ceroni, Ian MacCormack, Guillaume Verdon

AI总结:

本文在无量子马尔可夫性质但满足热有界性的条件下,严格证明了滑动窗口量子信念传播的近似收敛性,并证实其每步误差随窗口大小指数下降。

摘要:

我们为滑动窗口量子信念传播的近似收敛性提供了一个严格证明,该证明在 Bilgin 和 Poulin(参考文献 [1])的工作中曾以启发式方式概述,且是在不具备量子马尔可夫性质的情况下给出的。特别地,我们证实了该工作中提出的假设:在信念传播所作用的底层状态具有所谓的热有界性(thermal boundedness)——即精确收敛所需的马尔可夫性质的一种松弛条件——这一假设下,信念传播算法每一步的近似误差随滑动窗口大小呈指数下降。

英文摘要:

We provide a rigorous proof of the approximate convergence of sliding-window quantum belief-propagation as outlined heuristically in the work of Bilgin and Poulin (Ref. [1]), in the absence of the quantum Markov property. In particular, we confirm the hypothesis outlined in this work that the approximation error of each step in the belief-propagation algorithm decreases exponentially with the sliding-window size, under the assumption that the underlying state on which belief-propagation is being performed possesses a so-called thermal boundedness property: a relaxation of the Markov property required for exact convergence.

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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