On chip synchronization of Bloch oscillations in a strongly coupled pair of small Josephson junctions

Autor:	Kaap, Fabian, Scheer, David, Hassler, Fabian, Lotkhov, Sergey
Rok vydání:	2023
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Superconductivity
Zdroj:	Phys. Rev. Lett. 132, 027001 (2024)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.132.027001
Popis:	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 high-ohmic environment composed of highly inductive meanders of granulated aluminum and high-ohmic titanium microstrips. We observe a pronounced current mirror eff ect in the coupled junctions and demonstrate current plateaus, akin to the fi rst dual Shapiro step in microwave experiments. These fi ndings suggest that our circuit design holds promise for realizing protected Bloch oscillations and precise Shapiro steps of interest for current metrology. Comment: Main text 5 pages, 6 figures; Supplemental 3 pages, 2 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2306.06996 Zobrazit plný text záznamu View this record from Arxiv