activity
20182026
most citedSolving correlation clustering with QAOA and a Rydberg qudit system: a full-stack approach

48 citations · 107 across the 10 of their papers we have counts for

collaborators

10 papers

physics.atom-ph2026

A Robust Strontium Tweezer Apparatus for Quantum Computing

Marijn Venderbosch, Rik van Herk, Zhichao Guo +11

Neutral atoms for quantum computing applications show promise in terms of scalability and connectivity. We demonstrate the realization of a versatile apparatus capable of stochasti…

physics.atom-ph2025

Engineering Zeeman-manifold quintets using state-dependent light shifts in neutral atoms

Benedikt Heizenreder, Bas Gerritsen, Katya Fouka +4

We present a general method for engineering qudits through individually addressable transitions between Zeeman sublevels, achieved by combining a large linear Zeeman shift with a s…

cond-mat.quant-gas2025

Control of single spin-flips in a Rydberg atomic fractal

Robin C. Verstraten, Ivo H. A. Knottnerus, Yu Chih Tseng +6

Rydberg atoms trapped by optical tweezers have emerged as a versatile platform to emulate lattices with different geometries, in which long-range interacting spins lead to fascinat…

physics.atom-ph2025★ 4 cited

Measurement of the g factor of ground-state 87Sr at the parts-per-million level using co-trapped ultracold atoms

Premjith Thekkeppatt, Digvijay, Alexander Urech +2

We demonstrate nuclear magnetic resonance of optically trapped ground-state ultracold 87Sr atoms. Using a scheme in which a cloud of ultracold 87Rb is co-trapped nearby, we improve…

quant-ph2025★ 2 cited

Parallel assembly of neutral atom arrays with an SLM using linear phase interpolation

Ivo H. A. Knottnerus, Yu Chih Tseng, Alexander Urech +2

We present fast parallel rearrangement of single atoms in optical tweezers into arbitrary geometries by updating holograms displayed by an ultra fast spatial light modulator. Using…

quant-ph2023

Efficient Reduction of Casimir Forces by Self-assembled Bio-molecular Thin Films

René I. P. Sedmik, Alexander Urech, Zeev Zalevsky +1

Casimir forces, related to London-van der Waals forces, arise if the spectrum of electromagnetic fluctuations is restricted by boundaries. There is great interest both from fundame…

physics.atom-ph2022★ 37 cited

Narrow-line imaging of single strontium atoms in shallow optical tweezers

Alexander Urech, Ivo H. A. Knottnerus, Robert J. C. Spreeuw +1

Single strontium atoms held in optical tweezers have so far only been imaged using the broad - transition. For Yb, use of the narrow…

quant-ph2021★ 48 cited

Solving correlation clustering with QAOA and a Rydberg qudit system: a full-stack approach

Jordi R. Weggemans, Alexander Urech, Alexander Rausch +6

We study the correlation clustering problem using the quantum approximate optimization algorithm (QAOA) and qudits, which constitute a natural platform for such non-binary problems…

physics.ins-det2019★ 6 cited

Microscope objective for imaging atomic strontium with 0.63 micrometer resolution

Ivo Knottnerus, Sergey Pyatchenkov, Oleksiy Onishchenko +3

Imaging and manipulating individual atoms with submicrometer separation can be instrumental for quantum simulation of condensed matter Hamiltonians and quantum computation with neu…

physics.atom-ph2018★ 10 cited

The frequency of the ultranarrow transition in

Oleksiy Onishchenko, Sergey Pyatchenkov, Alexander Urech +4

We determine the frequency of the ultranarrow transition by spectroscopy of an ultracold gas. This transition is referenc…