| Zugriffsnummer | 25508 |
| Dokumenttyp | Konferenzartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Hybrid single-electron turnstile - towards a quantum standard of electric current |
| Autor(in); Institution |
Pekola, Jukka P.; Helsinki University of Technology, Low Temperature Laboratory, Helsiniki, FINLAND
Averin, Dmitri V.; Stony Brook University, Department of Physics and Astronomy, New York, USA
Kafanov, Sergey; Helsinki University of Technology, Low Temperature Laboratory, Helsiniki, FINLAND
Kemppinen, Antti; MIKES, Espoo, FINLAND
Lotkhov, Sergey V.; 2.4, Quantenelektronik, PTB-Braunschweig
Maisi, Ville F.; MIKES, Espoo, FINLAND
Meschke, Matthias; Helsinki University of Technology, Low Temperature Laboratory, Helsiniki, FINLAND
Möttönen, Mikko; Helsinki University of Technology, Low Temperature Laboratory, Helsiniki, FINLAND; Helsinki University of Technology, Department of Engineering Physics, COMP, TKK, FINLAND
Pashkin, Yuri A.; NEC Nano Electronics Research Laboratories, Tsukuba, JAPAN; The Institute of Physical and Chemical Research (RIKEN), Wako, JAPAN
Saira, Olli-Pentti; Helsinki University of Technology, Low Temperature Laboratory, Helsiniki, FINLAND
Tsai, Jaw-Shen; NEC Nano Electronics Research Laboratories, Tsukuba, Japan; The Institute of Physical and Chemical Research (RIKEN), Wako, Japan
Zorin, Alexander B.; 2.4, Quantenelektronik, PTB-Braunschweig
|
| Quelle/Jahr | 2010 Conference on Precision Electromagnetic Measurements digest:(2010), 88 - 89 |
| Herausgeber(in) |
Song, Yang Sup
|
| ISBN | 978-1-4244-6794-5 (print) ; 978-1-424-46796-9 (CD-ROM) |
| Verlag | Piscataway, NJ: IEEE Operations Center |
| Konferenzangaben | 2010 Conference on Precision Electromagnetic Measurements, CPEM, Daejeon, 13-18, June, 2010, South Korea |
| Zusammenfassung | 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. 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. 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. Work on suppressing the harmful sub-gap leakage current is in progress with encouraging experimental results. |
Zitierung
Pekola, J. P., Averin, D. V., Kafanov, S., Kemppinen, A., Lotkhov, S. V., Maisi, V. F., Meschke, M., Möttönen, M., Pashkin, Y. A., Saira, O.-P., Tsai, J.-S., & Zorin, A. B. (2010). Hybrid single-electron turnstile - towards a quantum standard of electric current. 2010 Conference on Precision Electromagnetic Measurements, CPEM, Daejeon, 13-18, June, 2010, South Korea.