| Zugriffsnummer | 41408 |
| Dokumenttyp | Konferenzartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Increasing quantized single-electron current accuracy in a tunable barrier pump by two-gate modulation |
| Autor(in); Institution |
Stein, Friederike; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Götz, Martin; 2.6, Elektrische Quantenmetrologie, PTB-Braunschweig
Weimann, Thomas; 2.4, Quantenelektronik, PTB-Braunschweig
Pierz, Klaus; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Schumacher, Hans Werner; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Hohls, Frank; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
|
| Quelle/Jahr | 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018):(2018), 940 - 941 |
| ISSN | 2160-0171 (online) ; 0589-1485 (PoD) |
| ISBN | 978-1-5386-0974-3 (PDF) ; 978-1-5386-0973-6 (USB-Stick) ; 978-1-5386-2130-1 (PoD) |
| DOI | |
| Verlag | Piscataway, NJ: IEEE |
| Konferenzangaben | Conference on Precision Electromagnetic Measurements ; CPEM 2018, Paris, 08-13, July, 2018, France |
| Freie Schlagworte | Single-electron pump ; quantized current ; current measurement |
| Zusammenfassung | Tunable barrier single-electron pumps (SEPs) have recently shown their great potential as high precision current source with direct link to the electron charge. The quantization of SEPs realized in gallium-arsenide semiconductors and driven by a single alternating control voltage routinely shows sub-ppm accuracy when applying high magnetic field. However, their accuracy without field is presently much lower. We now have found that modulation of two gates can increase accuracy in zero magnetic field and have confirmed the current quantization I = ef for a frequency of 84.5 MHz within the measurement uncertainty of less than 1 ppm. |
| Themenbereich der Metrologie | Elektrizität und Magnetismus |
| Forschungsprojekt | 15SIB08: e-SI-Amp: Quantum realisation of the SI ampere |
| Förderinformationen (1) |
Förderername: European Commission (EC)
Förderer ID: 0000 0001 2242 8989 Förderer ID Typ: ISNI Förderprogramm: EMPIR 2015 SI Broader Scope Titel der Förderung: 15SIB08: e-SI-Amp: Quantum realisation of the SI ampere Förderungsnummer: 15SIB08 |
Zitierung
Stein, F., Götz, M., Weimann, T., Pierz, K., Schumacher, H. W., & Hohls, F. (2018). Increasing quantized single-electron current accuracy in a tunable barrier pump by two-gate modulation. Conference on Precision Electromagnetic Measurements ; CPEM 2018, Paris, 08-13, July, 2018, France. https://doi.org/10.1109/cpem.2018.8500988