Genuine quadripartite steering in three-photon spontaneous parametric down-conversion
T. H. Chen, Youbin Yu, Aixi Chen · Physical Review A · 2022
The authors show that genuine quadripartite quantum steering can be produced in the case of three-photon spontaneous parametric down-conversion when the quantum property of the pump is considered. They also find that the injected signal can improve the stability of quadripartite quantum steering.