Mesoscopic superconductors under irradiation: Microwave spectroscopy of Andreev states
arXiv:cond-mat/9811200 · doi:10.1006/spmi.1999.0753
Abstract
We show that irradiation of a voltage-biased superconducting quantum point contact at frequencies of the order of the gap energy can remove the suppression of subgap dc transport through Andreev levels. Quantum interference among resonant scattering events involving photon absorption is furthermore shown to make microwave spectroscopy of the Andreev levels feasible. We also discuss how the same interference effect can be applied for detecting weak electromagnetic signals up to the gap frequency, and how it is affected by dephasing and relaxation.
Submitted to a special volume of "Superlattices and Microstructures" on Mesoscopic Superconductivity
References in corpus (1)
Cited by in corpus (5)
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