activity
19982025
most citedBeyond the Jaynes-Cummings model: circuit QED in the ultrastrong coupling regime

1.3k citations · 5.2k across the 66 of their papers we have counts for

collaborators

67 papers

cond-mat.mes-hall2025

Resolving Abrikosov vortex entry in superconducting nano-string resonators via displacement-noise spectroscopy in cavity-optomechanics

Thomas Luschmann, Tahereh Sadat Parvini, Lukas Niekamp +3

Abrikosov vortices in type-II superconductors critically influence current flow and coherence, thereby imposing fundamental limits on superconducting quantum technologies. Quantum…

quant-ph2025★ 4 cited

Broadband electron paramagnetic resonance spectroscopy of Er:LiYF at mK temperatures

Ana Strinic, Patricia Oehrl, Achim Marx +4

Rare-earth spin ensembles are a promising platform for microwave quantum memory applications due to their hyperfine transitions, which can exhibit exceptionally long coherence time…

quant-ph2023★ 11 cited

Cryogenic microwave link for quantum local area networks

W. K. Yam, M. Renger, S. Gandorfer +16

Scalable quantum information processing with superconducting circuits is expected to advance from individual processors located in single dilution refrigerators to more powerful di…

quant-ph2023★ 3 cited

Two-dimensional Planck spectroscopy for microwave photon calibration

S. Gandorfer, M. Renger, W. K. Yam +4

Quantum state tomography of weak microwave signals is an important part of many protocols in the field of quantum information processing with superconducting circuits. This step ty…

quant-ph2023★ 8 cited

Quantum microwave parametric interferometer

F. Kronowetter, F. Fesquet, M. Renger +7

Classical interferometers are indispensable tools for the precise determination of various physical quantities. Their accuracy is bound by the standard quantum limit. This limit ca…

physics.app-ph2023★ 16 cited

Surface acoustic wave resonators on thin film piezoelectric substrates in the quantum regime

Thomas Luschmann, Alexander Jung, Stephan Geprägs +6

Lithium niobate (LNO) is a well established material for surface acoustic wave (SAW) devices including resonators, delay lines and filters. Recently, multi-layer substrates based o…