Geometric Landau-Zener interferometry in a superconducting charge pump

Details Geometric Landau-Zener interferometry in a superconducting charge pump Geometric Landau-Zener interferometry in a superconducting charge pump

2011-06-20

arxiv.org/abs/1106.3941v2

Physical Review Letters 107, 207002 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.107.207002

We propose a new type of interferometry, based on geometric phases accumulated by a periodically driven two-level system undergoing multiple Landau-Zener transitions. As a specific example, we study its implementation in a superconducting charge pump. We find that interference patterns appear as a function of the pumping frequency and the phase bias, and clearly manifest themselves in the pumped charge. We also show that the effects described should persist in the presence of realistic decoherence.

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