Surface Acoustic Wave Single-Electron Interferometry

Details Surface Acoustic Wave Single-Electron Interferometry Surface Acoustic Wave Single-Electron Interferometry

2004-09-30

arxiv.org/abs/quant-ph/0409219v1

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevB.72.085329

We propose an experiment to observe interference of a single electron as it is transported along two parallel quasi-one-dimensional channels trapped in a single minimum of a travelling periodic electric field. The experimental device is a modification of the surface acoustic wave (SAW) based quantum processor. Interference is achieved by creating a superposition of spatial wavefunctions between the two channels and inducing a relative phase shift via either a transverse electric field or a magnetic field. The interference can be used to estimate the decoherence time of an electron in this type of solid-state device.

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