Fig. 4
From: Two-axis quantum control of a fast valley qubit in silicon

State tomography of Z rotations. a–c Red dots represent state projections when the qubit is initialized in state |−y〉 (θ = π/2), and blue dots indicate an initial state of |+z〉 (θ = 2π). Data is extracted from Fig. 3a and solid traces are fits to a decaying exponential with a 4.6 GHz frequency. d Normalized trajectories of the qubit state on the Bloch sphere during Z rotations, using the fits from state tomography