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arXiv 1105.3789quant-ph
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纯二分态与完全混合态的渐近局部假设检验

Asymptotic local hypothesis testing between a pure bipartite state and the completely mixed state

Masaki Owari, Masahito Hayashi

摘要:

本文利用单向LOCC、双向LOCC和可分POVM,讨论了任意固定的二分纯态和完全混合态之间的渐近假设检验(或非对称处理错误的状态判别).因此,我们推导出单向LOCC,双向LOCC和可分离POVM下的Stein引理类型的最优误差指数的单字母公式,单向LOCC POVM和可分离POVM下的Beschoff界,以及单向LOCC POVM下参数的整个区域和参数的限制区域上的可分离POVM下的Hoeffding界。我们还数值计算了低维系统中一类三步LOCC协议下的Hoffff和Hoeffding界,并表明这些界不仅优于单向LOCC POVM的界,而且在推导出可分离POVM的解析界的参数区域中几乎逼近可分离POVM的界。

英文摘要:

In this paper, we treat an asymptotic hypothesis testing (or state discrimination with asymmetric treatment of errors) between an arbitrary fixed bipartite pure state and the completely mixed state by one-way LOCC, two-way LOCC, and separable POVMs. As a result, we derive single-letterized formulas for the Stein's lemma type of optimal error exponents under one-way LOCC, two-way LOCC and separable POVMs, the Chernoff bounds under one-way LOCC POVMs and separable POVMs, and the Hoeffding bounds under one-way LOCC POVMs in the whole region of a parameter and under separable POVMs on a restricted region of a parameter. We also numerically calculate the Chernoff and the Hoeffding bounds under a class of three-step LOCC protocols in low-dimensional systems and show that these bounds not only outperform the bounds for one-way LOCC POVMs but also almost approximates the bounds for separable POVMs in the parameter region where analytical bounds for separable POVMs are derived.

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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