One qubit as a Universal Approximant

by David López-Núñez (IFAE / BSC)

Wednesday Apr 14, 2021, 1:00 PM → 2:00 PM Europe/Madrid

IFAE Virtual Seminar Room (IFAE)

Quantum computing offers new possibilites for information processing and superconducting circuits have proved to be a promising platform to explore this new potential.

In this talk I will present how a single qubit can represent any bounded complex function stored in the degrees of freedom defining its quantum gates. I will focus on the experimental implementation of the universal approximant in a superconducting qubit circuit cooled to the base temperature of a dilution refrigerator (20mK). The limited coherence of the qubit does not impact significantly the results and it preserves the information well enough to reproduce the shape of the target functions.