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New building blocks for quantum computers: gates in superconducting microchips

PhD defence, Monday 25 November 2019. Niels Jakob Søe Loft.

2019.11.25 | Sunitha Satkunam

Niels Jakob Søe Loft

Quantum computers – machines that compute using the laws of quantum mechanics – have some theoretical advantages compared to the classical computers from our everyday life. It can solve certain tasks much faster, and it is therefore a highly desired goal for companies as well as governments. Many modern quantum computers consist of superconducting electrical circuits on a microchip.

As a part of his PhD studies, Niels Jakob Søe Loft has studied how these microchips can be designed in order to improve quantum computers. For instance, he has proposed a new quantum mechanical gate. The new gate operates on four quantum mechanical bits, which facilitate more complicated calculations than the comparable one- and two-quantum bit gates that are implemented in superconducting chips today. These results can turn out to be an important step forward in the development of quantum computers.

The PhD degree was completed at the Department for Physics and Astronomy, Science and Technology, Aarhus University.

This résumé was prepared by the PhD student.

Time: Monday 25 November 2019 at 12.15
Place: 1525-626, Ny Munkegade 120, 8000 Aarhus C
Title of PhD thesis: Quantum Systems in Cold Atoms and Superconducting Circuits
Contact information: Niels Jakob Søe Loft, e-mail: nsl@phys.au.dk, tel.: +45 26 71 81 15
Members of the assessment committee:
Associate professor Peter Rabl, TU Wien, Austria
Associate professor and group leader Mikko Möttönen, Aalto University, Finland
Associate professor Brian Julsgaard (chair), Department of Physics and Astronomy, Aarhus University
Main supervisor:
Associate professor Nikolaj T. Zinner, Department for Physics and Astronomy and Aarhus Institute of Advanced Studies (AIAS), Aarhus University
Co-supervisor:
Associate professor Georg M. Bruun, Department for Physics and Astronomy, Aarhus University
Language: The PhD dissertation will be defended in English

The defence is public.
The PhD thesis is available for reading at the Graduate School of Science and Technology/GSST, Ny Munkegade 120, building 1521, 8000 Aarhus C.

PhD defence
12183 / i43