The Meaning of Protective Measurements

Yakir Aharonov*, Jeeva Anandan, Lev Vaidman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

Protective measurement, which we have introduced recently, allows one to observe properties of the state of a single quantum system and even the Schrödinger wave itself. These measurements require a protection, sometimes due to an additional procedure and sometimes due to the potential of the system itself. The analysis of the protective measurements is presented and it is argued, contrary to recent claims, that they observe the quantum state and not the protective potential. Some other misunderstandings concerning our proposal are also clarified.

Original languageEnglish
Pages (from-to)117-126
Number of pages10
JournalFoundations of Physics
Volume26
Issue number1
DOIs
StatePublished - Jan 1996

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