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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

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27 papers · 1 filter

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…

quant-ph2022★ 4 cited

Flow of quantum correlations in noisy two-mode squeezed microwave states

M. Renger, S. Pogorzalek, F. Fesquet +10

We study nonclassical correlations in propagating two-mode squeezed microwave states in the presence of noise. We focus on two different types of correlations, namely, quantum enta…

quant-ph2022★ 42 cited

Quantum behavior of a superconducting Duffing oscillator at the dissipative phase transition

Qi-Ming Chen, Michael Fischer, Yuki Nojiri +8

Understanding the non-deterministic behavior of deterministic nonlinear systems has been an implicit dream since Lorenz named it the "butterfly effect". A prominent example is the…