Fig. 6: Electronic structure of Cr3+ centers in Cs2NaInCl6 hosts in magnetic field and optical initialization/readout protocols.
From: Spin Qubits Candidate in Transition-Metal-Ion doped Halide Double Perovskites

A The electronic structure and associated optical transitions of Cr3+. B Spin-selective optical signature of the Cr3+ spin centers in Cs2NaInCl6. C Protocol for high-fidelity optical initialization to the ∣−3/2〉 state and D for optical readout of each spin state.