A cavity-based method converts qubit frequency noise into measurable photon loss, validated with injected noise and yielding an upper bound of 5e3 Hz²/Hz at 508 MHz.
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Qubit Noise Sensing via Induced Photon Loss in a Superconducting Cavity
A cavity-based method converts qubit frequency noise into measurable photon loss, validated with injected noise and yielding an upper bound of 5e3 Hz²/Hz at 508 MHz.