Modeling High-Fidelity Cavity-based Rydberg Repeaters

Despite rapid progress in quantum repeater technology across platforms ranging from color centers in diamond to trapped ions, fundamental trade-offs remain between coherence, scalability, and long-distance link efficiency. Atomic ensembles offer a promising route to scalable quantum repeater memories, with natural extension to large qubit numbers and efficient light–matter interfaces potentially operating at telecom wavelengths. Using an optical cavity architecture based on Rydberg atomic ensembles, we model and simulate the write–read dynamics under realistic conditions and investigate enhanced cooperativity through the optimization of trapping configurations, cavity geometry, and pulse shaping. Our results outline a viable pathway toward fast, robust quantum repeater nodes and motivate integration with telecom photon sources and multiplexed network architectures.