Geometry induced entanglement transitions in nanostructures

Details Geometry induced entanglement transitions in nanostructures Geometry induced entanglement transitions in nanostructures

2010-03-19

arxiv.org/abs/1003.3781v1

J. Appl. Phys. 107, 09E110 (2010)

Physics

Quantum Physics

3 pages, 2 figures, to appear in Journal of Applied Physics

Scientific paper

We model quantum dot nanostructures using a one-dimensional system of two interacting electrons. We show that strong and rapid variations may be induced in the spatial entanglement by varying the nanostructure geometry. We investigate the position-space information entropy as an indicator of the entanglement in this system. We also consider the expectation value of the Coulomb interaction and the ratio of this expectation to the expectation of the confining potential and their link to the entanglement. We look at the first derivative of the entanglement and the position-space information entropy to infer information about a possible quantum phase transition.

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