5 papers
Tunable anharmonicity in Sn-InAs nanowire transmons beyond the short junction limit
Amrita Purkayastha, Amritesh Sharma, Param J. Patel +11
The anharmonicity of a transmon qubit, defined as the difference in energy level spacing, is a key design parameter. In transmons built from hybrid superconductor-semiconductor Jos…
Gate-tunable Josephson parametric amplifiers based on semiconductor nanowires
Raphael Rousset-Zenou, Nicolas Aparicio, Simon Messelot +5
Superconductor-semiconductor hybrid materials have been extensively used for experiments on electrically tunable quantum devices. Notably, Josephson junctions utilizing nanowire we…
Transmon qubit using Sn as a junction superconductor
Amrita Purkayastha, Amritesh Sharma, Param J. Patel +11
Superconductor qubits typically use aluminum-aluminum oxide tunnel junctions to provide the non-linear inductance. Junctions with semiconductor barriers make it possible to vary th…
Missing odd-order Shapiro steps do not uniquely indicate fractional Josephson effect
P. Zhang, S. Mudi, M. Pendharkar +10
Topological superconductivity is expected to spur Majorana zero modes -- exotic states that are also considered a quantum technology asset. Fractional Josephson effect is their man…
Sn-InAs nanowire shadow-defined Josephson junctions
Amritesh Sharma, An-Hsi Chen, Connor P. Dempsey +6
Interest in hybrid electronic devices for quantum science is driving the research into superconductor-semiconductor materials combinations. Here we study InAs nanowires coated with…