On the Spin Dependence of Detection Times and the Nonmeasurability of Arrival Times

Autor: Goldstein, Sheldon, Tumulka, Roderich, Zanghì, Nino
Rok vydání: 2023
Předmět:
Zdroj: Scientific Reports 14: 3775 (2024)
Druh dokumentu: Working Paper
DOI: 10.1038/s41598-024-53777-8
Popis: According to a well-known principle of quantum physics, the statistics of the outcomes of any quantum experiment are governed by a Positive Operator-Valued Measure (POVM). In particular, for experiments designed to measure a specific physical quantity, like the time of a particle's first arrival at a surface, this principle establishes that if the probability distribution of that quantity does not arise from a POVM, no such experiment exists. Such is the case with the arrival time distributions proposed by Das and D\"urr [arXiv:1802.07141], due to the nature of their spin dependence.
Comment: 2 pages RevTeX, no figures
Databáze: arXiv
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