702 citations · 2.5k across the 36 of their papers we have counts for
6 papers · 1 filter
Observation of giant two-level systems in a granular superconductor
Maximilian Kristen, Jan Nicolas Voss, Micha Wildermuth +4
Disordered thin films are a common choice of material for superconducting, high impedance circuits used in quantum information or particle detector physics. A wide selection of mat…
Electric field spectroscopy of material defects in transmon qubits
Jürgen Lisenfeld, Alexander Bilmes, Anthony Megrant +6
Superconducting integrated circuits have demonstrated a tremendous potential to realize integrated quantum computing processors. However, the downside of the solid-state approach i…
Correlating decoherence in transmon qubits: Low frequency noise by single fluctuators
Steffen Schlör, Jürgen Lisenfeld, Clemens Müller +5
We report on long-term measurements of a highly coherent, non-tunable superconducting transmon qubit, revealing low-frequency burst noise in coherence times and qubit transition fr…
Interplay between kinetic inductance, non-linearity and quasiparticle dynamics in granular aluminum MKIDs
Francesco Valenti, Fábio Henriques, Gianluigi Catelani +13
Microwave kinetic inductance detectors (MKIDs) are thin film, cryogenic, superconducting resonators. Incident Cooper pair-breaking radiation increases their kinetic inductance, the…
Transmission-line resonators for the study of individual two-level tunneling systems
Jan David Brehm, Alexander Bilmes, Georg Weiss +2
Parasitic two-level tunneling systems (TLS) emerge in amorphous dielectrics and constitute a serious nuisance for various microfabricated devices, where they act as a source of noi…
Decoherence spectroscopy with individual two-level tunneling defects
Jürgen Lisenfeld, Alexander Bilmes, Shlomi Matityahu +7
Recent progress with microfabricated quantum devices has revealed that an ubiquitous source of noise originates in tunneling material defects that give rise to a sparse bath of par…