Hybrid Single-Ion Atomic-Ensemble Node for High-Rate Remote Entanglement Generation
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866916014746238976 |
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| author | Tissot, Benedikt Maiti, Soubhadra Hellebek, Emil R. Sørensen, Anders Søndberg |
| author_facet | Tissot, Benedikt Maiti, Soubhadra Hellebek, Emil R. Sørensen, Anders Søndberg |
| contents | 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. As a particular example, 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_04488 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Hybrid Single-Ion Atomic-Ensemble Node for High-Rate Remote Entanglement Generation Tissot, Benedikt Maiti, Soubhadra Hellebek, Emil R. Sørensen, Anders Søndberg Quantum Physics 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. As a particular example, 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. |
| title | Hybrid Single-Ion Atomic-Ensemble Node for High-Rate Remote Entanglement Generation |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2511.04488 |