49 citations · 85 across the 7 of their papers we have counts for
8 papers
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…
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…
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…
Optimal distributed sensing in noisy environments
Pavel Sekatski, Sabine Wölk, Wolfgang Dür
We consider distributed sensing of non-local quantities. We introduce quantum enhanced protocols to directly measure any (scalar) field with a specific spatial dependence by placin…
Revealing quantum properties with simple measurements
S. Wölk
Since the beginning of quantum mechanics, many puzzling phenomena which distinguish the quantum from the classical world, have appeared such as complementarity, entanglement or con…
Optimized parameter estimation in the presence of collective phase noise
Sanah Altenburg, Sabine Wölk, Geza Toth +1
We investigate phase and frequency estimation with different measurement strategies under the effect of collective phase noise. First, we consider the standard linear estimation sc…
Characterizing the width of entanglement
Sabine Wölk, Otfried Gühne
We introduce the concept of entanglement width as measure of the spatial distribution of entanglement in multiparticle systems. We develop criteria to detect the width of entanglem…
A unified approach to entanglement criteria using the Cauchy-Schwarz and Hölder inequalities
Sabine Wölk, Marcus Huber, Otfried Gühne
We present unified approach to different recent entanglement criteria. Although they were developed in different ways, we show that they are all applications of a more general prin…