Fig. 2: Tomography of the density matrix.

a Pulse sequence for the preparation and density matrix tomography of \(\left| {\psi _1} \right\rangle\) and \(\left| {\psi _2} \right\rangle\). b–e Real and imaginary parts of the density matrices of (b, c) \(\left| {\psi _1} \right\rangle\) and (d, e) \(\left| {\psi _2} \right\rangle\), with deviations from the ideal values represented by the dashed yellow bars.