Optical experiment to test negative probability in context of quantum-measurement selection.

ABSTRACT: Negative probability values have been widely employed as an indicator of the nonclassicality of quantum systems. Known as a quasiprobability distribution, they are regarded as a useful tool that provides significant insight into the underlying fundamentals of quantum theory when compared to the classical statistics. However, in this approach, an operational interpretation of these negative values with respect to the definition of probability-the relative frequency of occurred event-is missing. An alternative approach is therefore considered where the quasiprobability operationally reveals the negativity of measured quantities. We here present an experimental realization of the operational quasiprobability, which consists of sequential measurements in time. To this end, we implement two set

SUBMITTER: Ryu J 

PROVIDER: S-EPMC6910950 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature