Coherent superconducting quantum pump

Felix Hoehne, Yuri A. Pashkin, Oleg V. Astafiev, Mikko Möttönen, Jukka P. Pekola, Jawshen Tsai

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We demonstrate nonadiabatic charge pumping utilizing a sequence of coherent oscillations between a superconducting island and two reservoirs. The pumping rate for each elementary cycle is limited by the coupling between the island and the reservoirs given by the Josephson energy. Our experimental and theoretical studies show that relaxation can be employed to reset the pump in order to avoid accumulation of errors due to nonideal control pulses. Thus our results demonstrate the effects of nonadiabatic quantum pumping and dissipation.

Original languageEnglish
Article number140504
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume85
Issue number14
DOIs
Publication statusPublished - 5 Apr 2012
Externally publishedYes

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