Josephson junctions in double nanowires bridged by in-situ deposited superconductors
Alexandros Vekris, Juan Carlos Estrada Salda\~na, Thomas Kanne,, Mikelis Marnauza, Dags Olsteins, Furong Fan, Xiaobo Li, Thor Hvid-Olsen,, Xiaohui Qiu, Hongqi Xu, Jesper Nyg{\aa}rd, Kasper Grove-Rasmussen
TL;DR
This paper investigates double quantum dot Josephson junctions using closely-grown double nanowires with in-situ superconductors, revealing their potential for exotic topological phases through phase diagram mapping.
Contribution
It presents the characterization of parallel double quantum dot Josephson junctions in closely-grown nanowires, demonstrating their quasi-independence and potential for topological phases.
Findings
Mapping of the Yu-Shiba-Rusinov phase diagram
Observation of quasi-independent double dot behavior
Potential for realizing exotic topological phases
Abstract
We characterize parallel double quantum dot Josephson junctions based on closely-grown double nanowires bridged by in-situ deposited superconductors. The parallel double dot behavior occurs despite the closeness of the nanowires and the potential risk of nanowire clamping during growth. By tuning the charge filling and lead couplings, we map out the simplest parallel double quantum dot Yu-Shiba-Rusinov phase diagram. Our quasi-independent two-wire hybrids show promise for the realization of exotic topological phases.
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