Randomized benchmarking on the Clifford group and beyond

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• Jonas Helsen, QuTech, Delft University
• Friday 06 December 2019, 12:00-13:00
• MR15, Centre for Mathematical Sciences, Wilberforce Road, Cambridge.

If you have a question about this talk, please contact Sergii Strelchuk.

In this talk I will give an introduction to randomized benchmarking, a standard experimental technique in quantum computing. I will review the reasons for its existence and the functioning of its standard ‘Clifford group’ version from a representation theoretical angle. Using this representation theory perspective one can see that randomized benchmarking can be generalized to arbitrary finite groups. I will show how to do this in a principled manner and discuss some issues that appear. Finally, if there is time, I will try to give a hint of how the powerful machinery of harmonic analysis can be applied to guarantee the correct functioning of randomized benchmarking under very broad experimental conditions.

This talk is part of the CQIF Seminar series.

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