Figure 2: Direct density matrix reconstruction.
From: Complete tomography of a high-fidelity solid-state entangled spin–photon qubit pair
(a) Real part of the density matrix of the ideal spin–photon entangled state, ρideal=
. (b) Imaginary part of the density matrix of the ideal spin–photon entangled state, ρideal=
. (c) Real part of the reconstructed density matrix ρreconstructed, overlayed on the ideal density matrix (shaded box). (d) Imaginary part of the reconstructed density matrix ρreconstructed, overlayed on the ideal density matrix (shaded box).
