| Zugriffsnummer | 52094 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Synchronization of Bloch oscillations in a strongly coupled pair of small Josephson junctions: evidence for a Shapiro-like current step |
| Übersetzungstitel | Synchronisation von Bloch-Oszillationen in einem Paar stark kapazitiv gekoppelter, kleinen Josephson-Tunnelkontakte: Beweis von Shapiro-ähnlichen Stromstufen |
| Autor(in); Institution |
Lotkhov, Sergey; 2.4, Quantenelektronik, PTB-Braunschweig
Hassler, Fabian; JARA Institute for Quantum Information, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, GERMANY
Scheer, David; JARA Institute for Quantum Information, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, GERMANY
|
| Quelle/Jahr | Physical Review Letters: 132 (2024), 2, 027001-1 - 027001-5 |
| Artikelnummer | 027001 |
| ISSN | 0031-9007 (print) ; 1079-7114 (online) |
| DOI | |
| Verlag | College Park, Md.: American Physical Society (APS) |
| Freie Schlagworte | Bloch oscillations ; current standard ; Coulomb blockade |
| Zusammenfassung | Bloch oscillations are a fundamental phenomenon linking the adiabatic transport of Cooper pairs to time. Here, we investigate synchronization of the Bloch oscillations in a strongly coupled system of sub-100 nm Al/AlOx/Al Josephson junctions in a high-Ohmic environment composed of highly inductive meanders of granulated aluminum and high-Ohmic titanium microstrips. We observe a pronounced current mirror effect in the coupled junctions and demonstrate current plateaus, akin to the first dual Shapiro step in microwave experiments. These findings suggest that our circuit design holds promise for realizing protected Bloch oscillations and precise Shapiro steps of interest for current metrology. |
| Themenbereich der Metrologie | Elektrizität und Magnetismus |
| Forschungsprojekt | DFG Grant. No. LO 870/2-1, FV-24033 |
| Förderinformationen (1) |
Förderername: Deutsche Forschungsgemeinschaft (DFG)
Förderer ID: 0000 0001 2096 9829 Förderer ID Typ: ISNI Förderungsnummer: LO 870/2-1, Projectnummer: 445530728 |
Zitierung
Kaap, F., Lotkhov, S., Hassler, F., & Scheer, D. (2024). Synchronization of Bloch oscillations in a strongly coupled pair of small Josephson junctions: evidence for a Shapiro-like current step. Physical Review Letters, 132(2), 027001-1–027001-5. https://doi.org/10.1103/PhysRevLett.132.027001