Post-doctoral Researcher in Superconducting Quantum Devices

About us

The London Centre for Nanotechnology (LCN) is an interdisciplinary enterprise between University College London, King’s College London and Imperial College London. In bringing together world-class infrastructure and leading nanotechnology research activities, the Centre aims to attain the critical mass to compete with the best facilities abroad. The LCN has strong relationships with the broader nanotechnology and commercial communities, and is involved in much major collaboration. As the world’s only such facility to be located in the heart of a metropolis, the LCN has superb access to corporate, investment and industrial partners. It is at the forefront of training in nanotechnology, and has a strong media presence aimed at educating the public and bringing transparency to this emerging science.

Paul Warburton’s group works on quantum applications of superconducting devices. Recently our experimental focus has been on coherent quantum phase-slips (CQPS) in superconducting nanowires. These devices are the electrostatic dual of the Josephson junction – there is predicted to be a sinusoidal relationship between the voltage across a CQPS nanowire and the charge on it. As a result the CQPS nanowire acts as a non-linear capacitor which can be used in qubits, sensors, amplifiers and many other applications. In addition to this experimental work we also have a substantial theoretical/numerical activity on quantum annealing and other continuous-time quantum computation paradigms.

About the role

Paul Warburton’s group has recently been awarded funding by QuantERA to develop applications of superconducting non-linear capacitors, including nanowires. The APPSUNCAP project, which is led by Prof Warburton, is a collaboration between UCL, NPL (UK), CNRS (France) and CENN Nanocenter (Slovenia). As well as contributing to work-packages across the whole APPSUNCAP project, the appointee will primarily focus on the design of parametric radio-frequency amplifiers in three device architectures: (i) CQPS nanowire amplifiers in a resonant cavity; (ii) CQPS nanowire amplifiers in the travelling-wave geometry; (iii) hybrid CQPS/Josephson amplifiers in the travelling-wave geometry. The first two of these architectures will also be fabricated and their r.f. amplification performance characterised at cryogenic temperatures

Please refer to the full Job Description for more information on responsibilities and requirements.

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