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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…
quant-ph2024
Measuring a single atom's position with extreme sub-wavelength resolution and force measurements in the yoctonewton range
P. H. Huber, P. Barthel, Th. Sriarunothai +3
The center-of-mass position of a single trapped atomic ion is measured and tracked in time with high precision. Employing a near-resonant radio frequency field of wavelength 2.37 c…