The Capacity Region of Entanglement Switching: Stability and Zero Latency
Wenhan Dai, Anthony Rinaldi, Don Towsley · 2022 IEEE International Conference on Quantum Computing and Engineering (QCE) · 2022
Quantum switches distribute entangled pairs among end nodes by entanglement swapping and are critical components in quantum networks. In this work, we design protocols that schedule entanglement swapping in quantum switches. In contrast to most existing studies, we consider that entanglement requests randomly arrive at the switch, and determine the capacity region of rate vectors that the switch can support stably. For a rate vector inside the capacity region, we develop protocols that not only stabilize the switch, but also achieve zero average latency. Among these protocols, the on-demand protocols are computationally efficient and achieve high fidelity and low latency demonstrated by results obtained using a quantum network discrete event simulator.