Operational meanings of a generalized conditional expectation in quantum metrology

A unifying formalism of generalized conditional expectations (GCEs) for quantum mechanics has recently emerged, but its physical implications regarding the retrodiction of a quantum observable remain controversial. To address the controversy, here I offer operational meanings for a version of the GC...

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Bibliographic Details
Main Author: Mankei Tsang
Format: Article
Language:English
Published: Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften 2023-11-01
Series:Quantum
Online Access:https://quantum-journal.org/papers/q-2023-11-03-1162/pdf/