Matches in SemOpenAlex for { <https://semopenalex.org/work/W2806458001> ?p ?o ?g. }
- W2806458001 abstract "In a recent Letter [PRL, 113, 050401 (2014)], it is shown that the quantum violation of a three-time Leggett-Garg inequality (LGI) for a dichotomic qutrit system can exceed the L$ddot{u}$ders bound. This is obtained by using a degeneracy breaking projective measurement rule which the authors termed as von Neumann rule. Such violation can even approach the algebraic maximum in the asymptotic limit of system size. In this paper, we question the implication of such violation of L$ddot{u}$ders bound and its conceptual relevance in LG scenario. We note an important fact that the basis for implementing the proposed von Neumann rule for a degenerate observable is non-unique and show that the violation of L$ddot{u}$ders bound is crucially dependent on the choice of basis. Further, we demonstrate the violation of L$ddot{u}$ders bound of the simplest non-contextual inequality (NCI) which is in contrast to the reasoning provided in the aforementioned Letter. This result further raises the doubts regarding the validity of the proposed rule as a viable projective measurement. We discuss the relevance of such results with respect to the usual quantum violation of LGI and NCI." @default.
- W2806458001 created "2018-06-13" @default.
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- W2806458001 date "2018-10-31" @default.
- W2806458001 modified "2023-10-01" @default.
- W2806458001 title "Violation of the Lüders bound of macrorealist and noncontextual inequalities" @default.
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- W2806458001 doi "https://doi.org/10.1103/physreva.98.042135" @default.
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