Optimizing Variational Quantum Algorithms with qBang: Efficiently Interweaving Metric and Momentum to Navigate Flat Energy Landscapes

D Fitzek, RS Jonsson, W Dobrautz, C Schäfer - Quantum, 2024 - quantum-journal.org
Variational quantum algorithms (VQAs) represent a promising approach to utilizing current
quantum computing infrastructures. VQAs are based on a parameterized quantum circuit …

Efficiency of the hidden fermion determinant states Ansatz in the light of different complexity measures

BJ Wurst, DM Kennes, JB Profe - arXiv preprint arXiv:2411.04527, 2024 - arxiv.org
Finding reliable approximations to the quantum many-body problem is one of the central
challenges of modern physics. Elemental to this endeavor is the development of advanced …