Feedback-based calibration for tuning and drift control of a trapped-ion quantum processor

As quantum computing hardware continues to scale, calibration and drift mitigation have become increasingly important for maintaining high-performance quantum operations. Advanced control and readout hardware based on FPGAs can enable the low-latency feedback between qubit measurement results and pulse-level control necessary for real-time calibration and parameter tuning. In this talk, we introduce two low-latency calibration protocols which take advantage of these capabilities to update control parameters conditioned on the outcomes of simple quantum circuits. Using these protocols, we demonstrate rapid tuning and drift control of a trapped-ion quantum processor. We anticipate that these protocols will be suitable for on- and off-line tuning and drift control of any quantum processor regardless of its physical hardware realization.

SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525.