Robustness of device-independent dimension witnesses
Robustness of device-independent dimension witnesses
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DOI：
10.1103/physreva.86.042312
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发表时间：
2012-10-11
影响因子：
2.9
通讯作者：
Acin, Antonio
中科院分区：
文献类型：
--
作者：
Dall'Arno, Michele;Passaro, Elsa;Acin, Antonio
设备无关的维度证人提供了一个“黑盒子”的情况下，只有准备，测量和结果之间的相关性被认为是经典和量子系统的维数的下限。我们解决的问题，尺寸证人的鲁棒性，即见证系统的尺寸或区分其量子或经典性质，即使在存在损失。我们考虑的情况下，共享的随机性是允许之间的准备和测量，并提供一个阈值的检测效率，使尺寸见证仍然可以进行。
Device-independent dimension witnesses provide a lower bound on the dimensionality of classical and quantum systems in a "black box" scenario where only correlations between preparations, measurements, and outcomes are considered. We address the problem of the robustness of dimension witnesses, namely that to witness the dimension of a system or to discriminate between its quantum or classical nature, even in the presence of loss. We consider the case when shared randomness is allowed between preparations and measurements and provide a threshold in the detection efficiency such that dimension witnessing can still be performed.