Nature research paper: Precision tomography of a three-qubit donor quantum processor in silicon
state initialization was successful. Only then the record will be saved. The electron spin is prepared induring the nuclear spin readout process. Subsequently, the GST sequence is executed. The red box indicates the Q1, Q2 readout step. The total duration of the pulse sequence is 120 ms, of which nuclear spin initialization is 8.6 ms , initial nuclear spin readout is 26.5 ms , 3 ms delay is added for electron initialization , GST circuit is 10 μs–300 μs , and nuclear readout is 80 ms .
All simulated randomized benchmarking experiments used two-qubit Clifford subroutines compiled from the six native gates, requiring 14.58 individual gate operations per two-qubit Clifford., Standard randomized benchmarking, simulated using the GST-estimated gate set, yields a ‘reference’ decay rate of
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