We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK


97% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > Coherent superconducting quantum pump
View graph of relations

« Back

Coherent superconducting quantum pump

Research output: Contribution to journalJournal article


  • Felix Hoehne
  • Yuri A. Pashkin
  • Oleg V. Astafiev
  • Mikko Mottonen
  • Jukka P. Pekola
  • JawShen Tsai
Article number140504
<mark>Journal publication date</mark>5/04/2012
<mark>Journal</mark>Physical Review B
Number of pages5
<mark>Original language</mark>English


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.