Entanglement distribution with wavevector-multiplexed quantum memory

Abstract Feasible distribution of quantum entanglement over long distances remains a fundamental step towards secure communication and network implementations. Quantum repeater nodes based on memories promise to overcome exponential signal decay inherent optical implementations communication. While performance current hinders their practical application, multimode solutions with multiplexing can offer tremendous increase in rates. We propose use wavevector-multiplexed atomic memory (WV-MUX-QM) as block multiplexed architecture. show the WV-MUX-QM platform provide quasi-deterministic generation extended distances, mitigating issue loss even currently available devices, exceeding repeaterless well other repeater-based protocols such temporal multiplexing. establish entangled-bit (ebit) rate per number employed figure merit reflecting cost-efficiency larger inter-node distances.