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quant-ph2026
A Practical Introduction to VQE: Methods, Challenges, and Applications in Physics and Chemistry
Jannis Ehrlich, Felix Rupprecht, Konstantin Lamp +6
The Variational Quantum Eigensolver (VQE) has become a central hybrid quantum-classical method for addressing electronic structure and materials science problems on near-term quant…
quant-ph2026
Faster matrix product state preparation by exploiting symmetry-induced block-sparsity
Felix Rupprecht, Sabine Wölk
Matrix product states (MPS) serve as a key tool for studying quantum systems from chemistry and condensed-matter physics, making their preparation on quantum computers an important…
quant-ph2026
Sparse quantum state preparation with improved Toffoli cost
Felix Rupprecht, Sabine Wölk
The preparation of quantum states is one of the most fundamental tasks in quantum computing, and a key primitive in many quantum algorithms. Of particular interest to areas such as…