Protective measurement and the PBR theorem

Guy Hetzroni, Daniel Rohrlich

Research output: Chapter in Book/Report/Conference proceedingChapterAcademicpeer-review


Protective measurements illustrate how Yakir Aharonov's fundamental insights into quantum theory yield new experimental paradigms that allow us to test quantum mechanics in ways that were not possible before. As for quantum theory itself, protective measurements demonstrate that a quantum state describes a single system, not only an ensemble of systems, and reveal a rich ontology in the quantum state of a single system. We discuss in what sense protective measurements anticipate the theorem of Pusey, Barrett, and Rudolph (PBR), stating that, if quantum predictions are correct, then two distinct quantum states cannot represent the same physical reality.
Original languageEnglish
Title of host publicationProtective Measurement and Quantum Reality
PublisherCambridge University Press
Number of pages10
Publication statusPublished - 7 Jan 2015
Externally publishedYes

Publication series

NameProtective Measurement and Quantum Reality


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