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Caroli-de Gennes-Matricon Analogs in Full-Shell Hybrid Nanowires
M. T. Deng, Carlos Payá, Pablo San-Jose +3
We report tunneling spectroscopy of Andreev subgap states in hybrid nanowires with a thin superconducting full-shell surrounding a semiconducting core. The combination of the quant…
Supercurrent transport through 1-periodic full-shell Coulomb islands
D. Razmadze, R. Seoane Souto, E. C. T. O'Farrell +4
We experimentally investigate supercurrent through Coulomb islands, where island and leads are fabricated from semiconducting nanowires with fully surrounding superconducting shell…
Non-Abelian holonomy of Majorana zero modes coupled to a chaotic quantum dot
Max Geier, Svend Krøjer, Felix von Oppen +3
If a quantum dot is coupled to a topological superconductor via tunneling contacts, each contact hosts a Majorana zero mode in the limit of zero transmission. Close to a resonance…
Spin-resolved spectroscopy using a quantum dot defined in InAs 2DEG
Alisa Danilenko, Andreas Pöschl, Deividas Sabonis +4
We realize a device, based on InAs two-dimensional electron gas proximitized by superconducting Al, which allows a single quantum dot level to be used as a spectrometer of the dens…
The Berezinskii-Kosterlitz-Thouless Transition and Anomalous Metallic Phase in a Hybrid Josephson Junction Array
C. G. L. Bøttcher, F. Nichele, J. Shabani +2
We investigate the Berezinskii-Kosterlitz-Thouless (BKT) transition in a semiconductor-superconductor two-dimensional Josephson junction array. Tuned by an electrostatic top gate,…
Few-mode to mesoscopic junctions in gatemon qubits
Alisa Danilenko, Deividas Sabonis, Georg W. Winkler +3
We investigate a semiconductor nanowire-based gatemon qubit with epitaxial Al on two facets of the nanowire, allowing gate control of wire density. Two segments have the Al removed…