Hybrid Single-Ion Atomic-Ensemble Node for High-Rate Remote Entanglement Generation

• URL: http://arxiv.org/abs/2511.04488v1
• Date: Thu, 06 Nov 2025 16:07:59 GMT
• Title: Hybrid Single-Ion Atomic-Ensemble Node for High-Rate Remote Entanglement Generation
• Authors: Benedikt Tissot, Soubhadra Maiti, Emil R. Hellebek, Anders Søndberg Sørensen,
• Abstract summary: We develop a hybrid architecture for high-rate entanglement generation in quantum networks.<n>We show that our approach can lead to a significant speed-up for the fundamental task of creating ion-ion entanglement over hundreds of kilometers in a quantum network.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Different quantum systems possess different favorable qualities. On the one hand, ensemble-based quantum memories are suited for fast multiplexed long-range entanglement generation. On the other hand, single-atomic systems provide access to gates for processing of information. Both of those can provide advantages for high-rate entanglement generation within quantum networks. We develop a hybrid architecture that takes advantage of these properties by combining trapped-ion nodes and nodes comprised of spontaneous parametric down conversion photon pair sources and absorptive memories based on rare-earth ion ensembles. To this end, we solve the central challenge of matching the different bandwidths of photons emitted by those systems in an initial entanglement-generation step. This enables the parallel execution of multiple probabilistic tasks in the initial stage. We show that our approach can lead to a significant speed-up for the fundamental task of creating ion-ion entanglement over hundreds of kilometers in a quantum network.

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