title: Single Quantum Level Electron Turnstile.
abstract: We report on the realization of a single-electron source, where current is transported through a single-level quantum dot (Q) tunnel coupled to two superconducting leads (S). When driven with an ac gate voltage, the experiment demonstrates electron turnstile operation. Compared to the more conventional superconductor-normal-metal-superconductor turnstile, our superconductor-quantum-dot-superconductor device presents a number of novel properties, including higher immunity to the unavoidable presence of nonequilibrium quasiparticles in superconducting leads. Moreover, we demonstrate its ability to deliver electrons with a very narrow energy distribution.
authors.affiliation: Université Grenoble Alpes, F-38000 Grenoble, France.|CNRS, Institut Néel, F-38000 Grenoble, France.
authors.forename: D M T
authors.initials: DM
authors.lastname: van Zanten
authors.affiliation: Université Grenoble Alpes, F-38000 Grenoble, France.|CNRS, Laboratoire de Physique et Modélisation des Milieux Condensés, F-38000 Grenoble, France.
authors.forename: D M
authors.initials: DM
authors.lastname: Basko
authors.affiliation: Université Grenoble Alpes, F-38000 Grenoble, France.|CNRS, Laboratoire de Physique et Modélisation des Milieux Condensés, F-38000 Grenoble, France.|Institute for Physics of Microstructures, Russian Academy of Sciences, 603950 Nizhny Novgorod GSP-105, Russia.
authors.forename: I M
authors.initials: IM
authors.lastname: Khaymovich
authors.affiliation: Université Grenoble Alpes, F-38000 Grenoble, France.|CNRS, Institut Néel, F-38000 Grenoble, France.|Low Temperature Laboratory, Department of Applied Physics, Aalto University School of Science, FI-00076 Aalto, Finland.
authors.forename: J P
authors.initials: JP
authors.lastname: Pekola
authors.affiliation: Université Grenoble Alpes, F-38000 Grenoble, France.|CNRS, Institut Néel, F-38000 Grenoble, France.
authors.forename: H
authors.initials: H
authors.lastname: Courtois
authors.affiliation: Université Grenoble Alpes, F-38000 Grenoble, France.|CNRS, Institut Néel, F-38000 Grenoble, France.
authors.forename: C B
authors.initials: CB
authors.lastname: Winkelmann