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CMP
Credit: Jack Hobhouse

Peter Leek

Research Fellow

Sub department

  • Condensed Matter Physics

Research groups

  • Superconducting quantum devices
peter.leek@physics.ox.ac.uk
Telephone: 01865 (2)72364,01865 (2)82066
Clarendon Laboratory, room 018,104
  • About
  • Publications

Searching for Wave-like Dark Matter with QSHS

(2022)

Authors:

I Bailey, B Chakraborty, G Chapman, Ej Daw, J Gallop, G Gregori, E Hardy, L Hao, E Laird, P Leek, S.Ó.Peatáin, Y Pashkin, Mg Perry, M Piscitelli, E Romans, J March-Russell, P Meeson, S Sarkar, Pj Smith, N Song, M Soni, Bk Tan, S West, S Withington
More details from the publisher

Efficient characterization of qudit logical gates with gate set tomography using an error-free Virtual-Z-gate model

(2022)

Authors:

Shuxiang Cao, Deep Lall, Mustafa Bakr, Giulio Campanaro, Simone Fasciati, James Wills, Vivek Chidambaram, Boris Shteynas, Ivan Rungger, Peter Leek
More details from the publisher
Details from ArXiV

High coherence and low cross-talk in a tileable 3D integrated superconducting circuit architecture

Science Advances American Association for the Advancement of Science (AAAS) 8:16 (2022) eabl6698

Authors:

Peter A Spring, Shuxiang Cao, Takahiro Tsunoda, Giulio Campanaro, Simone Fasciati, James Wills, Mustafa Bakr, Vivek Chidambaram, Boris Shteynas, Lewis Carpenter, Paul Gow, James Gates, Brian Vlastakis, Peter J Leek
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Spatial Charge Sensitivity in a Multimode Superconducting Qubit

Physical Review Applied American Physical Society (APS) 17:2 (2022) 024058

Authors:

J Wills, G Campanaro, S Cao, SD Fasciati, PJ Leek, B Vlastakis
More details from the publisher

Radio-frequency characterization of a supercurrent transistor made of a carbon nanotube

Materials for Quantum Technology IOP Publishing 1:3 (2021) 035003

Authors:

M Mergenthaler, Fj Schupp, A Nersisyan, N Ares, A Baumgartner, C Schönenberger, Gad Briggs, Pj Leek, Ea Laird

Abstract:

A supercurrent transistor is a superconductor–semiconductor hybrid device in which the Josephson supercurrent is switched on and off using a gate voltage. While such devices have been studied using DC transport, radio-frequency measurements allow for more sensitive and faster experiments. Here a supercurrent transistor made from a carbon nanotube is measured simultaneously via DC conductance and radio-frequency reflectometry. The radio-frequency measurement resolves all the main features of the conductance data across a wide range of bias and gate voltage, and many of these features are seen more clearly. These results are promising for measuring other kinds of hybrid superconducting devices, in particular for detecting the reactive component of the impedance, which a DC measurement can never detect.
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