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InAs-Al Hybrid Devices Passing the Topological Gap Protocol
Morteza Aghaee, Arun Akkala, Zulfi Alam +124
We present measurements and simulations of semiconductor-superconductor heterostructure devices that are consistent with the observation of topological superconductivity and Majora…
Exponential Protection of Zero Modes in Majorana Islands
S. M. Albrecht, A. P. Higginbotham, M. Madsen +5
Majorana zero modes are quasiparticle excitations in condensed matter systems that have been proposed as building blocks of fault-tolerant quantum computers [1]. They are expected…
Electrical tuning of Rashba spin-orbit interaction in multigated InAs nanowires
Zoltán Scherübl, Gergő Fülöp, Morten Hannibal Madsen +2
Indium arsenide (InAs) nanowires (NWs) are a promising platform to fabricate quantum electronic devices, among others they have strong spin-orbit interaction (SOI). The controlled…
Magnetic field tuning and quantum interference in a Cooper pair splitter
G. Fülöp, F. Domínguez, S. d'Hollosy +8
Cooper pair splitting (CPS) is a process in which the electrons of naturally occurring spin-singlet pairs in a superconductor are spatially separated using two quantum dots. Here w…
Local electrical tuning of the nonlocal signals in a Cooper pair splitter
G. Fülöp, S. d'Hollosy, A. Baumgartner +6
A Cooper pair splitter consists of a central superconducting contact, S, from which electrons are injected into two parallel, spatially separated quantum dots (QDs). This geometry…
Direct Observation of Interface and Nanoscale Compositional Modulation in Ternary III-As Heterostructure Nanowires
Sriram Venkatesan, Morten H. Madsen, Herbert Schmid +3
Straight, axial InAs nanowire with multiple segments of GaInAs were grown. High resolution X-ray energy-dispersive spectroscopy (EDS) mapping reveal the distribution of group III a…