Fig. 6
From: Entanglement between more than two hundred macroscopic atomic ensembles in a solid
Visualization of our mathematical model for the set-up. This figure visualizes our mathematical model of the set-up of Fig. 1c; ξ n is the amplitude for creating n pairs, η a is the overall transmission and detection probability in mode a, Da is the heralding detector, η b is the transmission before the memory in mode b, η w is the write efficiency of the atomic frequency comb memory, η t is the transmission and detection probability after the memory in mode b, and Db is the detector in mode b. All losses and inefficiencies are modeled as beam splitters
