Maximum-likelihood estimation of quantum measurement -: art. no. 024102
Maximum-likelihood estimation of quantum measurement -: art. no. 024102
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DOI：
10.1103/physreva.64.024102
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发表时间：
2001-08-01
影响因子：
2.9
通讯作者：
Fiurásek, J
中科院分区：
文献类型：
--
作者：
Fiurásek, J
最大似然估计被应用于未知量子测量的确定。校准后的测量装置对许多不同的量子态进行测量，然后通过最大似然原理从收集的数据中推断出控制测量统计的正算子值测量。与基于线性反演的过程相比，我们的方法总是提供物理上合理的结果。我们说明的情况下的Stem-Gerlach装置的方法。
Maximum-likelihood estimation is applied to the determination of an unknown quantum measurement. The calibrated measuring apparatus carries out measurements on many different quantum states and the positive operator-valued measure governing the measurement statistics is then inferred from the collected data via the maximum-likelihood principle. In contrast to the procedures based on linear inversion, our approach always provides a physically sensible result. We illustrate the method on the case of the Stem-Gerlach apparatus.