Institute for Quantum Optics and Quantum Information - Austrian Academy of Sciences, Innsbruck
Variational Quantum Eigensolvers are one of the most promising applications in the current Noisy Intermediate-Scale Quantum (NISQ) technologies era, ranging from finding ground states of many-body quantum systems to solving combinatorial optimization problems. I will first provide an overview of the topic and present some applications. Then, I will illustrate challenges related to optimization of quantum circuit parameters in real experiments. In particular, in the last part, I will introduce Gaussian Process Models as a tool to fit the cost function landscape, in order to get more precise solutions in less time.