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Distinct Quantum States Cannot Be Compatible with a Single State of Reality

Gao, Shan (2013) Distinct Quantum States Cannot Be Compatible with a Single State of Reality. [Preprint]

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Abstract

Recently Lewis et al. [Phys. Rev. Lett. 109, 150404 (2012)] demonstrated that additional assumptions such as preparation independence are always necessary to rule out a psi-epistemic model, in which the quantum state is not uniquely determined by the underlying physical state. Their conclusion is based on an analysis of conventional projective measurements. Here we demonstrate that protective measurements, which are distinct from projective measurements, already shows that distinct quantum states cannot be compatible with a single state of reality. This improves the interesting result obtained by Pusey, Barrett and Rudolph [Nature Phys. 8, 475 (2012)].


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Item Type: Preprint
Creators:
CreatorsEmailORCID
Gao, Shansgao7319@uni.sydney.edu.au
Keywords: quantum state; wave function; projective measurement; protective measurement; physical state, ontic state, psi-epistemic model
Subjects: Specific Sciences > Physics > Quantum Mechanics
General Issues > Realism/Anti-realism
Depositing User: Dr. Shan Gao
Date Deposited: 09 Mar 2013 13:03
Last Modified: 09 Mar 2013 13:03
Item ID: 9609
Subjects: Specific Sciences > Physics > Quantum Mechanics
General Issues > Realism/Anti-realism
Date: 8 March 2013
URI: https://philsci-archive-dev.library.pitt.edu/id/eprint/9609

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