The effect of Kondo correlations on the subgap structure of a quantum dot contacted by superconducting leads is investigated experimentally in indium-arsenide nanowires. When the zero-bias Kondo effect is suppressed by the superconducting pairing of the electrons a profound enhancement of the first-order Andreev reflection is observed. Devices with local gate control allow individual tuning of multiple quantum dots along the wire, a double dot with tunable interdot coupling is demonstrated.
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