Extended Data Fig. 6: Bloch states and fidelities for the rotated [[10, 1, 2]] code.

(a) Bloch states that were obtained for the original [[10, 1, 2]] code, as shown in Fig. 4. (b) States within the Bloch sphere that were prepared with the rotated [[10, 1, 2]]_X code using the analogous protocol. (c) Fidelities averaged over groups of states that require the same number of logical operations. The filled bars correspond to the Bloch states for the original code and the hatched bars to those of the rotated version. On average, fidelities are higher for the rotated code, which is less sensitive to the dephasing. The error bars show standard deviations, determined as discussed in ‘Quantum state and process tomography’.