Towards understanding two-level-systems in amorphous solids: insights from quantum circuits
Amorphous solids show surprisingly universal behaviour at low temperatures. The
prevailing wisdom is that this can be explained by the existence of two-state defects within …
prevailing wisdom is that this can be explained by the existence of two-state defects within …
Two-level-system dynamics in a superconducting qubit due to background ionizing radiation
Superconducting qubit lifetimes must be both long and stable to provide an adequate
foundation for quantum computing. This stability is imperiled by two-level systems (TLSs) …
foundation for quantum computing. This stability is imperiled by two-level systems (TLSs) …
Coherence properties of the 0-πqubit
P Groszkowski, AD Paolo, AL Grimsmo… - New Journal of …, 2018 - iopscience.iop.org
Superconducting circuits rank among some of the most interesting architectures for the
implementation of quantum information processing devices. The recently proposed 0-π qubit …
implementation of quantum information processing devices. The recently proposed 0-π qubit …
Suppression of low-frequency charge noise in superconducting resonators by surface spin desorption
Noise and decoherence due to spurious two-level systems located at material interfaces are
long-standing issues for solid-state quantum devices. Efforts to mitigate the effects of two …
long-standing issues for solid-state quantum devices. Efforts to mitigate the effects of two …
Decoherence spectroscopy with individual two-level tunneling defects
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 …
source of noise originates in tunneling material defects that give rise to a sparse bath of …
Universal gates for protected superconducting qubits using optimal control
We employ quantum optimal control theory to realize quantum gates for two protected
superconducting circuits: the heavy-fluxonium qubit and the 0-π qubit. Utilizing automatic …
superconducting circuits: the heavy-fluxonium qubit and the 0-π qubit. Utilizing automatic …
Observation of discrete charge states of a coherent two-level system in a superconducting qubit
We report observations of discrete charge states of a coherent two-level system (TLS) that is
strongly coupled to an offset-charge-sensitive superconducting transmon qubit. We measure …
strongly coupled to an offset-charge-sensitive superconducting transmon qubit. We measure …
Spectrum and coherence properties of the current-mirror qubit
The current-mirror circuit [A. Kitaev, arXiv: cond-mat/0609441] exhibits a robust ground-state
degeneracy and wave functions with disjoint support for appropriate circuit parameters. In …
degeneracy and wave functions with disjoint support for appropriate circuit parameters. In …
Snowmass2021 Cosmic Frontier White Paper: Calibrations and backgrounds for dark matter direct detection
D Baxter, R Bunker, S Shaw, S Westerdale… - arXiv preprint arXiv …, 2022 - arxiv.org
Future dark matter direct detection experiments will reach unprecedented levels of
sensitivity. Achieving this sensitivity will require more precise models of signal and …
sensitivity. Achieving this sensitivity will require more precise models of signal and …
TLS dynamics in a superconducting qubit due to background ionizing radiation
T Thorbeck, A Eddins, I Lauer, DT McClure… - arXiv preprint arXiv …, 2022 - arxiv.org
Superconducting qubit lifetimes must be both long and stable to provide an adequate
foundation for quantum computing. This stability is imperiled by two-level systems (TLSs) …
foundation for quantum computing. This stability is imperiled by two-level systems (TLSs) …