Josephson junctions in double nanowires bridged by <i>in-situ</i> deposited superconductors
Alexandros Vekris, Juan Carlos Estrada Saldaña, Thomas Kanne, Mikelis Marnauza, Dags Olsteins, Furong Fan, Xiaobo Li, Thor Hvid-Olsen, Xiaohui Qiu, Hongqi Xu, Jesper Nygård, Kasper Grove-Rasmussen
Abstract
We characterize parallel double quantum dot Josephson junctions based on closely spaced double nanowires bridged by in-situ deposited superconductors. The parallel double dot behavior occurs despite the proximity of the two nanowires and the potential risk of nanowire clamping during growth. By tuning the charge filling and lead couplings, we map out the parallel double quantum dot Yu-Shiba-Rusinov phase diagram. Our quasi-independent two-wire hybrids show promise for the realization of exotic topological phases.
Topics & Concepts
NanowireJosephson effectQuantum dotCondensed matter physicsSuperconductivityRealization (probability)Charge (physics)Materials sciencePhase (matter)PhysicsQuantumPi Josephson junctionSuperconducting tunnel junctionOptoelectronicsQuantum entanglementQuantum tunnellingQuantum computerQuantum mechanicsPhysics of Superconductivity and MagnetismTopological Materials and PhenomenaQuantum and electron transport phenomena