Adaptive FPGA-based spectroscopy reveals that two-level-system defects in superconducting qubits switch frequency in seconds and spectrally diffuse at about 0.9 MHz²/s, roughly 300 times faster than conventional measurements.
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Adaptive Spectroscopy of Fast Two-Level-System Dynamics in Superconducting Qubits
Adaptive FPGA-based spectroscopy reveals that two-level-system defects in superconducting qubits switch frequency in seconds and spectrally diffuse at about 0.9 MHz²/s, roughly 300 times faster than conventional measurements.