activity
20112025
most citedExperimental loophole-free violation of a Bell inequality using entangled electron spins separated by 1.3 km

2.8k citations · 7.5k across the 28 of their papers we have counts for

collaborators

28 papers

quant-ph2025

Cavity-enhanced spectroscopy of individual nuclear spins in a dense bath

Alexander Ulanowski, Olivier Kuijpers, Benjamin Merkel +2

Echo-based spectroscopy of the superhyperfine interaction of an electronic spin with nuclear spins in its surroundings enables detailed insights into the microscopic magnetic envir…

quant-ph2024★ 9 cited

Characterization of the spin and crystal field Hamiltonian of erbium dopants in silicon

Adrian Holzäpfel, Stephan Rinner, Kilian Sandholzer +3

The integration of coherent emitters into low-loss photonic circuits is a key technology for quantum networking. In this context, nanophotonic silicon devices implanted with erbium…

quant-ph2024★ 32 cited

Optical single-shot readout of spin qubits in silicon

Andreas Gritsch, Alexander Ulanowski, Jakob Pforr +1

The digital revolution was enabled by nanostructured devices made from silicon. A similar prominence of this material is anticipated in the upcoming quantum era as the unrivalled m…

quant-ph2023★ 13 cited

Spectral Multiplexing of Rare-earth Emitters in a Co-doped Crystalline Membrane

Alexander Ulanowski, Johannes Früh, Fabian Salamon +2

The spectral addressing of many individual rare-earth dopants in optical resonators offers great potential for realizing distributed quantum information processors. To this end, it…

quant-ph2023★ 20 cited

Erbium emitters in commercially fabricated nanophotonic silicon waveguides

Stephan Rinner, Florian Burger, Andreas Gritsch +2

Quantum memories integrated into nanophotonic silicon devices are a promising platform for large quantum networks and scalable photonic quantum computers. In this context, erbium d…

quant-ph2023★ 65 cited

Purcell enhancement of single-photon emitters in silicon

Andreas Gritsch, Alexander Ulanowski, Andreas Reiserer

Individual spins that are coupled to telecommunication photons offer unique promise for distributed quantum information processing once a coherent and efficient spin-photon interfa…