Dehn, VanessaVanessaDehnWellens, ThomasThomasWellens2024-06-042024-06-072024-07-182024-06-042024https://publica.fraunhofer.de/handle/publica/46943510.1117/12.3002220The Quantum Approximate Optimization Algorithm (QAOA) is a promising candidate for solving combinatorial optimization problems more efficiently than classical computers. Recent studies have shown that warm-starting the standard algorithm improves the performance. In this paper we compare the performance of standard QAOA with that of warm-start QAOA in the context of portfolio optimization and investigate the warm-start approach for different problem instances. In particular, we analyze the extent to which the improved performance of warm-start QAOA is due to quantum effects, and show that the results can be reproduced or even surpassed by a purely classical preprocessing of the original problem followed by standard QAOA.enQuantum optimizationQuantum approximate optimizaton algorithmconference paper