Simulation of Entanglement Generation Between Absorptive Quantum Memories

In this work, we use the Simulator of QUantum Network Communication (SeQUeNCe) [1] developed by our group to simulate entanglement generation between two Atomic Frequency Comb (AFC) quantum memories. To validate our results we compare the simulations with recent experimental work of Lago-Rivera et al. To enable discrete-event simulations of entanglement distribution between multimode solid-state quantum memories, we develop simplified physical device models, including models of AFC quantum memories, beamsplitters, and fiber stretchers. We also develop techniques to simulate density matrix element measurements for the bipartite photonic states retrieved from quantum memories, and implement the entanglement generation and density matrix measurement protocols that control physical layer components. We validate our simplified models by comparing simulations with reported experimental photon counting statistics and interference visibility. Our work extends the usability of the SeQUeNCe simulator for near term quantum network hardware and protocols.