Multiplexed quantum repeaters based on dual-species trapped-ion systems

Trapped ions form an advanced technology platform for quantum information processing with long qubit coherence times, high-fidelity logic gates, optically active qubits, and a potential to scale up in size while preserving high level of connectivity between qubits. These traits make them attractive not only computing but also networking. Dedicated, special-purpose trapped-ion processors conjunction suitable interconnecting hardware can be used repeaters that enable high-rate communications distant computers network. In this regard, hybrid traps two distinct species ions, where one ion generate ion-photon entanglement is useful interfacing the network other has memory lifetimes, storage, have been proposed distribution. We consider architecture repeater based on such dual-species systems. propose analyze protocol spatial temporal mode multiplexing distribution across line repeaters. Our offers enhanced rates compared previously reported determine resources required at attain rates, best attainable when constraints are placed number per repeater. results bolster case near-term systems as long-distance communications.