External Time-Varying Fields and Electron Coherence

Details External Time-Varying Fields and Electron Coherence External Time-Varying Fields and Electron Coherence

2004-02-03

arxiv.org/abs/quant-ph/0402028v2

Phys.Rev.Lett. 92 (2004) 250402

Physics

Quantum Physics

4 pages, 1 figure; published version

Scientific paper

10.1103/PhysRevLett.92.250402

The effect of time-varying electromagnetic fields on electron coherence is investigated. A sinusoidal electromagnetic field produces a time varying Aharonov-Bohm phase. In a measurement of the interference pattern which averages over this phase, the effect is a loss of contrast. This is effectively a form of decoherence. We calculate the magnitude of this effect for various electromagnetic field configurations. The result seems to be sufficiently large to be observable.

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