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Driven superconducting proximity effect in interacting quantum dots

机译:相互作用量子点中的驱动超导邻近效应

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We present a theory of nonequilibrium superconducting proximity effect in an interacting quantum dot induced by a time-dependent tunnel coupling between the dot and a superconducting lead. The proximity effect, which 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 the dot and superconductors.
机译:我们提出了一个非平衡超导邻近效应的理论,该相互作用是量子点与超导引线之间的时间依赖性隧道耦合引起的相互作用量子点。当驱动频率满足与栅极电压相关的谐振条件时建立的邻近效应可以通过隧穿电流探查到弱耦合的正常引线中。此外,我们提出通过对点和超导体之间的耦合施加脉冲振荡变化来产生和操纵电子数相差两个的量子点态的相干叠加。

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