Quantum dynamics and transport in a double well system

Details Quantum dynamics and transport in a double well system Quantum dynamics and transport in a double well system

2008-07-16

arxiv.org/abs/0807.2572v2

Phys. Rev. B 78, 155404 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages, 4 figures, version to be published in PRB

Scientific paper

10.1103/PhysRevB.78.155404

The simplest one-dimensional model for the studying of non-trivial geometrical effects is a ring shaped device which is formed by joining two arms. We explore the possibility to model such a system as a two level system (TLS). Of particular interest is the analysis of quantum stirring, where it is not evident that the topology is properly reflected within the framework of the TLS modeling. On the technical side we provide a practical "neighboring level" approximation for the analysis of such quantum devices, which remains valid even if the TLS modeling does not apply.

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