How to protect the interpretation of the wave function against protective measurements

Details How to protect the interpretation of the wave function against protective measurements How to protect the interpretation of the wave function against protective measurements

1999-03-02

arxiv.org/abs/quant-ph/9903007v1

Phys Rev A 60, to appear

Physics

Quantum Physics

13 pages, 1 figure

Scientific paper

10.1103/PhysRevA.60.3474

A new type of procedures, called protective measurements, has been proposed by Aharonov, Anandan and Vaidman. These authors argue that a protective measurement allows the determination of arbitrary observables of a single quantum system and claim that this favors a realistic interpretation of the quantum state. This paper proves that only observables that commute with the system's Hamiltonian can be measured protectively. It is argued that this restriction saves the coherence of alternative interpretations.

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