Lower Bounds for Testing Complete Positivity and Quantum Separability

Lower Bounds for Testing Complete Positivity and Quantum Separability
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测试完全正性和量子可分离性的下限

DOI:
10.1007/978-3-030-61792-9_30
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发表时间:
2020
期刊:
LATIN 2020: Theoretical Informatics
影响因子:
--
通讯作者:
O'Donnell, Ryan
O'Donnell, Ryan
中科院分区:
--
文献类型:
--
作者:
Bădescu, Costin;O'Donnell, Ryan

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在这项工作中,我们感兴趣的是量子纠缠的测试问题。更具体地说,我们研究了量子性质测试中的可分离性问题,其中一个人被给予一个未知混合量子态的副本,并且一个人想要测试在踪迹距离上是否可分离或远离所有可分离的态。我们证明了在不太小的情况下,副本是检验可分离性所必需的,也就是说,我们还研究了网格上的完全正分布,作为可分离态的经典模拟。我们类比地证明了未知分布的样本是决定在总变异距离中是完全正分布还是远离所有完全正分布所必需的。
In this work we are interested in the problem of testing quantum entanglement. More specifically, we study theseparabilityproblem in quantum property testing, where one is givenncopies of an unknown mixed quantum stateon, and one wants to test whetheris separable or-far from all separable states in trace distance. We prove thatcopies are necessary to test separability, assumingis not too small, viz..We also study completely positive distributions on the grid, as a classical analogue of separable states. We analogously prove thatsamples from an unknown distributionpare necessary to decide whetherpis completely positive or-far from all completely positive distributions in total variation distance.
超几何尾部不等式:结束疯狂
DOI: --
发表时间: 2013
期刊:
影响因子: --
作者:
M. Skala
通讯作者: M. Skala