Mechanism of wavefunction collapse in measurements of separated quantum subsystems

• URL: http://arxiv.org/abs/2605.20111v1
• Date: Tue, 19 May 2026 16:59:36 GMT
• Title: Mechanism of wavefunction collapse in measurements of separated quantum subsystems
• Abstract summary: It is shown how the phase that locks together entangled states plays a special role in the measurement of isolated subsystems.<n>More broadly, these results solidify the theory of measurement of quantum superpositions.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The specific advance of this work is to propose a mechanism by which superpositions collapse during measurement of the separated subsystems of entangled quantum states. It is shown how the phase that locks together entangled states plays a special role in the measurement of isolated subsystems. This `contextual' phase is installed randomly into the entangled state, and decides the measurement outcomes for the subsystems by directing the collapse of each superposition to a particular classical outcome when a subsystem is measured. The measuring apparatus thus obtains a classical read-out of the quantum correlations embedded in an entangled state. More broadly, these results solidify the theory of measurement of quantum superpositions.

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