Single Quantum Level Electron Turnstile
Résumé
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 SQS device
presents a number of novel properties, including higher immunity to the unavoidable presence of
non-equilibrium quasiparticles in superconducting leads. In addition, we demonstrate its ability to
deliver electrons with a very narrow energy distribution.
Domaines
Physique Générale [physics.gen-ph]Origine | Fichiers produits par l'(les) auteur(s) |
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