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- W204568211 abstract "We propose a quasiprobability function for discrete quantum systems called qudits, which is commensurate with its classical counterpart. The commensurability of the quasiprobability function enables a direct comparison between quantum and classical statistics. We show that the quasiprobability function is positive semidefinite when the expectations of measurements can be described by a local hidden variable model with noninvasive measurability. On the other hand, quantum theory allows the negativity of the quasiprobability function, which depends on both quantum state and observables to be measured. In addition, we propose an optical experiment of a polarization qubit where the quasiprobability function can be utilized to demonstrate the nonclassicality of photon without any theoretical assumptions on photon loss and photon detection inefficiency. Finally we suggest a marginal quasiprobability function, which can be utilized as an entanglement witness for two qudits." @default.
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- W204568211 date "2012-06-29" @default.
- W204568211 modified "2023-09-27" @default.
- W204568211 title "Commensurate Quasiprobabilities for Qudits" @default.
- W204568211 hasPublicationYear "2012" @default.
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