Unravelling the noise: the discrimination of wave function collapse models under time-continuous measurements
Unravelling the noise: the discrimination of wave function collapse models under time-continuous measurements
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DOI：
10.1088/1367-2630/18/10/103040
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发表时间：
2016-10-24
影响因子：
3.3
通讯作者：
Serafini, Alessio
中科院分区：
文献类型：
--
作者：
Genoni, Marco G.;Duarte, O. S.;Serafini, Alessio
受环境噪声在原则上是可观察的概念的启发，而由于自发局部化的基本噪声不会，我们研究了连续监测环境下的波函数崩溃模型引起的扩散参数的估计。我们考虑到有限的测量效率，为了量化监测所赋予的优势，我们分析了与这样的扩散参数相关的量子Fisher信息，确定在有限的情况下的最佳测量，并评估这些测量在更现实的条件下的性能。
Inspired by the notion that environmental noise is in principle observable, while fundamental noise due to spontaneous localization would not be, we study the estimation of the diffusion parameter induced by wave function collapse models under continuous monitoring of the environment. We take into account finite measurement efficiencies and, in order to quantify the advantage granted by monitoring, we analyse the quantum Fisher information associated with such a diffusion parameter, identify optimal measurements in limiting cases, and assess the performance of such measurements in more realistic conditions.