Funding
EMP is funded through the Horizon2020 programme of the European Commission.
Selected Publications
 

Single Quantum Level Electron Turnstile

D.M.T. Van Zanten, D.M. Basko, I.M. Khaymovich, J.P. Pekola, H. Courtois, C.B. Winkelmann

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.


Phys. Rev. Lett. 116 166801 (2016)

doi: 10.1103/PhysRevLett.116.166801