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Susan Johny

Susan Johny

Scientist

Biography

Susan is part of NPL’s Quantum Information Processing Group and is currently undertaking research on Superconducting Readout Electronics for Infrared Single Photon Imaging, leading to a PhD in Electrical and Electronics Engineering from the University of Glasgow. Her work is funded by NPL and Quantic, through the EPSRC.

Susan has a bachelor’s degree in Electronics and Communications Engineering, followed by a Masters in Advanced Telecommunications and Wireless Engineering. She joined NPL’s Electromagnetic Technologies Group in 2018, and her work included experimental measurements at millimetre-wave frequencies using waveguide systems operating from 50 GHz to 750 GHz, to benchmark the primary UK standards of waveguides operating at these frequencies.

She has contributed to several national and international scientific research projects, funded by both the UK Government and international funding bodies.

Areas of interest

  • The development of Single Flux Quantum Electronics for the control and readout of Superconducting Quantum Circuits.
  • Exploring device geometries suitable for the fabrication of nanowires and weak link nanobridge devices.
  • Film deposition – the selection and optimisation of materials taking account of characteristics and fabrication parameters.

Publications

  1. Comparing Standardised and Manufacturers’ Interfaces for Waveguides used at Sub-millimetre Wavelengths: Nick M Ridler, Susan Johny, Martin J Salter, Xiaobang Shang, Wenjuan Sun and Alan Wilson

    Metrologia (January 2021) https://iopscience.iop.org/article/10.1088/1681-7575/abd371
     
  2. Establishing Waveguide Lines as Primary Standards for Scattering Parameter Measurements at Sub-millimetre Wavelengths: Nick M. Ridler, Fellow IEEE, Susan Johny, Member IEEE, Xiaobang Shang, Senior Member IEEE, Wenjuan Sun and Alan Wilson

    IEEE Transactions on Terahertz Science and Technology (July 2020) https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=9143465
     
  3. Ultra Wideband Terahertz Channel Propagation Measurements from 500 to 750 GHz: Demos Serghiou, Mohsen Khalily, Susan Johny, Manoj Stanley, Irshaad Fatadin, T.W.C. Brown, Nick M Ridler and Rahim Tafazolli.

    IEEE UCET 2020 Conference (August 2020) 10.1109/UCET51115.2020.9205476  
     
  4. Comparison of Diffuse Roughness Scattering from Material Reflections at 500 to 750 GHz: Demos Serghiou, Mohsen Khalily, Susan Johny, Manoj Stanley, Irshaad Fatadin, T.W.C. Brown, Nick M Ridler and Rahim Tafazolli;

    IEEE EUCAP 2021 (March 2021) 10.23919/EuCAP51087.2021.9411422

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