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arXiv · 1201.5461

Collapse of the quantum wavefunction and Welcher-Weg (WW) experiments

Y. Ben-Aryeh
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Abstract

The 'collapse' of the wave function in a general measuring process is analyzed by a pure quantum mechanical (QM) approach. The problem of the delayed choice and Welcher-Weg (WW) experiments is analyzed for Mach-Zehnder (MZ) interferometer. The WW effect is related to complementarity principle and orthogonality of wavefunctions although it produces small momentum changes between the electromagnetic (EM) field and the beam-splitters (BS's). For QM states for which we have a superposition of states and interference effects there is no reality before measurement, but by excluding such effects the system gets a real meaning already before measurement.

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Y. Ben-Aryeh. 2012-01-26. Collapse of the quantum wavefunction and Welcher-Weg (WW) experiments. https://arxiv.org/abs/1201.5461

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