Noise properties of superconducting coplanar waveguide microwave resonators

By Jiansong Gao, B. Mazin, P. Day, Jonas Zmuidzinas, Henry G. LeDuc California Institute of Technology, Jet propulsion Laboratory. 2006

217 citations recorded by the source corpus.

The authors have measured noise in thin-film superconducting coplanar waveguide resonators. This noise appears entirely as phase noise, equivalent to a jitter of the resonance frequency. In contrast, amplitude fluctuations are not observed at the sensitivity of their measurement. The ratio between the noise power in the phase and amplitude directions is large, in excess of 30 dB. These results have important implications for resonant readouts of various devices such as detectors, amplifiers, and qubits. They suggest that the phase noise is due to two-level systems in dielectric materials.

Subfields: Artificial Intelligence, Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/2376ad84c7bca780e5089cc144d57aab3ed2f625

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Citations in the corpus

New class of quantum error-correcting codes for a bosonic mode (2016, background): “To date, there is no evidence of dephasing errors associated with frequency fluctuations of 3D metallic superconducting cavities, though dephasing has been seen in coplanar waveguide resonators by the Zmuidzinas group [70] and attributed to two-level systems in the dielectric substrate.”
Lumped Element Kinetic Inductance Detectors (2008, background): “so far been limited by noise in the readout; either noise due to random events in the dielectric substrate (attributed to two-level systems) [ 3 ] for a readout based on the change in the phase of the microwave tone signal or noise in the cryogenic HEMT amplifier for a readout based in the change in”
Review of superconducting transition-edge sensors for x-ray and gamma-ray spectroscopy (2015, unknown): “other superconducting resonator based readouts [81].”
The physics of superconducting microwave resonators (2008, methodology): “While in the familiar high Pint regime, in which most MKIDs operate[14] and most of the noise data are taken[70], the frequency noise is observed to scale as P −1/2 int as discussed in Section 5.”
NIKA: A millimeter-wave kinetic inductance camera (2010, methodology): “The intrinsic detector phase-noise was determined to be Nθ ∝ f −0.43 which is compatible with a typical resonator noise spectrum Nθ ∝ f −0.5 that has previously been observed (Gao et al. 2007).”
A DUAL-BAND MILLIMETER-WAVE KINETIC INDUCTANCE CAMERA FOR THE IRAM 30 m TELESCOPE (2011, result): “The detectors noise is relatively flat, in contrast with previous measurements where aNθ, f ∝ f −0.5 dependence was observed (Monfardini et al. 2010, Gao et al. 2007).”
Harnessing electro-optic correlations in an efficient mechanical converter (2017, background): “Similar “parameter noise” has been observed in other superconducting resonator geometries [47], and may arise from fluctuating two-level systems at the substrate-metal interface or in a surface oxide layer [48].”