The Duan-Lukin-Cirac-Zoller (DLCZ) scheme is a potential method to establish remote entanglements and realize large-scale quantum networks. Here we propose a DLCZ-like scheme based on the noiseless photon echo in rare-earth ion-doped crystals. Correlated photon pairs with a controllable delay can be created by the direct optical rephasing. Theoretical analysis indicates that the protocol is efficient in the low-optical-depth regime. This protocol could be feasibly implemented to establish long-lived quantum correlations between a photon and a spin-wave excitation in rare-earth ion-doped crystals.
Cite
@article{arxiv.2304.13444,
title = {Nonclassical photon-pair source based on noiseless photon echo},
author = {Duo-Lun Chen and Zong-Quan Zhou and Chuan-Feng Li and Guang-Can Guo},
journal= {arXiv preprint arXiv:2304.13444},
year = {2023}
}