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arXiv · 1903.00526

Product states, entanglement, and measurement

Art Hobson
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Abstract

A product state of a composite quantum system AB is customarily interpreted physically to mean subsystem A has property A1 and subsystem B has property B1. But this interpretation contradicts both the theory and observed outcomes of non-local interferometry experiments on the momentum-entangled state of two photons. These experiments demonstrate that product states must be interpreted physically as correlations, i.e. the product state means A has property A1 if and only if B has property B1. This clarification resolves the problem of definite outcomes and, with it, the measurement problem.

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Art Hobson. 2019-03-01. Product states, entanglement, and measurement. https://arxiv.org/abs/1903.00526

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