Quantum interference experiments, modular variables and weak measurements

Details Quantum interference experiments, modular variables and weak measurements Quantum interference experiments, modular variables and weak measurements

2009-10-22

arxiv.org/abs/0910.4227v1

Physics

Quantum Physics

Scientific paper

We address the problem of interference using the Heisenberg picture and highlight some new aspects through the use of pre-selection, post-selection, weak measurements, and modular variables, We present a physical explanation for the different behaviors of a single particle when the distant slit is open or closed: instead of having a quantum wave that passes through all slits, we have a localized particle with non-local interactions with the other slit(s). We introduce a Gedankenexperiment to measure this non-local exchange. While the Heisenberg picture and the Schrodinger pictures are equivalent formulations of quantum mechanics, nevertheless, the results discussed here support a new approach which has led to new insights, new intuitions, new experiments, and even the possibility of new devices that were missed from the old perspective.

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