Home > Research > Publications & Outputs > Hybrid single-electron turnstile

Associated organisational unit

Links

Text available via DOI:

Keywords

View graph of relations

Hybrid single-electron turnstile: towards a quantum standard of electric current

Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNConference contribution/Paperpeer-review

Published
  • J. P. Pekola
  • D. V. Averin
  • Sergey Kafanov
  • A. Kemppinen
  • S. V. Lotkhov
  • V. F. Maisi
  • M. Meschke
  • M. Mottonen
  • Yu. A. Pashkin
  • O. -P. Saira
  • J. S. Tsai
  • A. B. Zorin
Close
Publication date13/06/2010
Host publicationPrecision Electromagnetic Measurements (CPEM), 2010 Conference on
PublisherIEEE
Pages88-88
Number of pages1
<mark>Original language</mark>English
Event2010 Conference on Precision Electromagnetic Measurements - Daejeon
Duration: 13/06/201018/06/2010

Conference

Conference2010 Conference on Precision Electromagnetic Measurements
CityDaejeon
Period13/06/1018/06/10

Conference

Conference2010 Conference on Precision Electromagnetic Measurements
CityDaejeon
Period13/06/1018/06/10

Abstract

First I discuss various candidates of single-electron current pumps for quantum metrology. Then I focus on the hybrid normal-metal-superconductor turnstile in the form of a one-island single-electron transistor with one gate [1-3]. The device demonstrates robust current plateaus at multiple levels of ef at frequency f. I discuss the various error mechanisms, based on our experiments and theoretical considerations. Ultimately the quantization accuracy is expected to be limited by either two-electron tunneling or by Cooper-pair-electron co-tunneling [4]. We predict that it should be possible to achieve the metrological accuracy of 10−8, while maintaining the quantized current on the level of more than 10 pA, just by one turnstile with realistic parameters using aluminium as a superconductor. Recently we have managed to run ten turnstiles in parallel increasing the current level to above 100 pA [5]. Work on suppressing the harmful sub-gap leakage current is in progress with encouraging experimental results.