Master’s student

Cryogenic electronics

Ref. 2021_025

Cryogenic electronics offer a promising path forward for improving the performance of quantum computers. However, the operation and characteristics of electronic devices, such as Si CMOS transistors, at very low temperatures are not well understood. In particular, better device models are needed to capture self-heating effects. Self-heating is due to dissipated power in the active transistor region and has several consequences, such as changing key device metrics and invalidating compact models.

This Master’s thesis project will characterize CMOS transistors at cryogenic temperature. Device models will be developed to model and explain the measured data. In particular, self-heating effects at low temperature will be studied in these devices.

The work will include:

  • Cryogenic measurements of CMOS test chips down to sub-Kelvin temperatures
  • Modeling of device characteristics and self-heating effects using MATLAB

The candidate will join the Materials Integration and Nanoscale Devices (MIND) group at IBM Research Europe in Zurich. The project is available with start in August-October (depending on applicant’s availability) for a minimum duration of six months. Please note that this is a non-remunerated M.Sc. thesis project, not a funded position.

Further reading:

  • B. Patra et al., “Cryo-CMOS Circuits and Systems for Quantum Computing Applications,” IEEE J. Solid-State Circuits, vol. 53, no. 1, pp. 309–321, 2018.
  • Prasad, C., S. Ramey, and L. Jiang. "Self-heating in advanced CMOS technologies." In 2017 IEEE International Reliability Physics Symposium (IRPS), pp. 6A-4. IEEE, 2017.

Requirements

  • An excellent academic record
  • Applicants are expected to pursue a master’s degree in electrical engineering, nanoscience or physics
  • Experience with MATLAB is a must
  • Excellent English communication skills

Diversity

IBM is committed to diversity at the workplace. With us you will find an open, multicultural environment. Excellent flexible working arrangements enable all genders to strike the desired balance between their professional development and their personal lives.

How to apply

Interested candidates please submit an application including CV, cover letter and academic transcript.


For more information on technical questions please contact
Dr. Cezar Zota

Quantum computer