Related papers: Correlated frequency noise in a multimode acoustic resonator

Correlated frequency noise in a multimode acoustic resonator

URL: http://arxiv.org/abs/2208.13410v5
Date: Tue, 28 May 2024 08:27:46 GMT
Title: Correlated frequency noise in a multimode acoustic resonator
Authors: Nuttamas Tubsrinuan, Jared H. Cole, Per Delsing, Gustav Andersson,
Abstract summary: This study investigates frequency fluctuations in a surface acoustic wave (SAW) resonator. Two-level system (TLS) defects show significant degrees of correlations that diminish with increased detuning. In addition to the TLS-induced noise, we observe strong anomalous frequency fluctuations with slow, anti-correlated dynamics.
Score: 0.0
License: http://creativecommons.org/licenses/by/4.0/
Abstract: Frequency instabilities are a major source of errors in quantum devices. This study investigates frequency fluctuations in a surface acoustic wave (SAW) resonator, where reflection coefficients of 14 SAW modes are measured simultaneously for more than seven hours. We report two distinct noise characteristics. Multimode frequency noise caused by interactions with two-level system (TLS) defects shows significant degrees of correlations that diminish with increased detuning. This finding agrees with the current understanding of the parasitic TLS behavior as one of the dominant noise sources in quantum devices. In addition to the TLS-induced noise, we observe strong anomalous frequency fluctuations with slow, anti-correlated dynamics. These noise bursts resemble signatures of cosmic radiation observed in superconducting quantum systems.

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