Physikalisches Kolloquium

Wintersemester 2022/2023

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Kirchhoff-Institut für Physik, Otto-Haxel-Hörsaal
Friday 17:15

20.1.2023 17:00
Prof. Dr. Matthias Christandl, Department of Mathematical Sciences, University of Copenhagen
INF 308, Hörsaal 1

In these days, we are witnessing amazing progress in both the variety and quality of platforms for quantum computation and quantum communication. Since algorithms and communication protocols designed for traditional 'classical' hardware do not employ the superposition principle and thus provide no gain even when used on quantum hardware, we are in need of developing specific quantum algorithms and quantum communication protocols that make clever use of the superposition principle and extract a quantum advantage. "Quantum hardware needs quantum software", so to say. Furthermore, due to noise in the qubits, known as decoherence, an additional quantum-specific software layer is required that emulates a perfect quantum machine on top of a noise one. I will demonstrate our recent work on this subject with theorems as well data from university and commercial quantum devices.