Quantum light storage in rare-earth-ion-doped solids

Hua Yi-Lin^{1, 2}, Zhou Zong-Quan^{1, 2, †}, Li Chuan-Feng^{1, 2, ‡}, Guo Guang-Can^{1, 2}

(color online) The principles of the full AFC protocol. (a) The required energy levels of the protocol. (b) The sequence diagram of the full AFC protocol (from Ref. [18])