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arXiv · 1201.5032

Driven superconducting proximity effect in interacting quantum dots

Ali G. Moghaddam·Michele Governale·Jürgen König
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Abstract

We present a theory of non-equilibrium superconducting proximity effect in an interacting quantum dot induced by a time-dependent tunnel coupling between dot and a superconducting lead. The proximity effect, that is established when the driving frequency fulfills a gate-voltage-dependent resonance condition, can be probed through the tunneling current into a weakly-coupled normal lead. Furthermore, we propose to generate and manipulate coherent superpositions of quantum-dot states with electron numbers differing by two, by applying pulsed oscillatory variations to the couplings between dot and superconductors.

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Ali G. Moghaddam, Michele Governale, Jürgen König. 2012-03-07. Driven superconducting proximity effect in interacting quantum dots. https://doi.org/10.1103/physrevb.85.094518

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