This research demonstrates real-time tracking of relaxation rates in superconducting qubits, suggesting improved calibration methods for quantum processors.
Key Points
The aim is to enhance temporal resolution in tracking relaxation time fluctuations in superconducting qubits.
Utilized a field-programmable gate-array powered classical controller for adaptive tracking.
Measured relaxation times of two fixed-frequency superconducting transmon qubits.
Applied real-time Bayesian estimation protocol for rapid relaxation time estimates.
Achieved tracking precision increased by two orders of magnitude.
Observed relaxation time fluctuations switching by an order of magnitude over milliseconds.
Identified fast fluctuations related to two-level systems switching at rates up to 10 Hz.