Multipartite Mixed-Species Entanglement over a Quantum Network
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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_ | 1866913898451435520 |
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| author | Main, D. Drmota, P. Ainley, E. M. Agrawal, A. Webb, D. Saner, S. Bazavan, O. Nichol, B. C. Srinivas, R. Nadlinger, D. P. Araneda, G. Lucas, D. M. |
| author_facet | Main, D. Drmota, P. Ainley, E. M. Agrawal, A. Webb, D. Saner, S. Bazavan, O. Nichol, B. C. Srinivas, R. Nadlinger, D. P. Araneda, G. Lucas, D. M. |
| contents | We generate multipartite entangled states of two, three and four matter qubits, where the entanglement is distributed over macroscopic distances via a photonic network link. Trapped-ion ${}^{88}\text{Sr}^+$ qubits are entangled directly via the optical fibre link, and the entanglement is subsequently extended to ${}^{43}\text{Ca}^+$ memory qubits co-trapped in each network node, using local mixed-species logic gates. We create remotely entangled $\text{Sr}^+$-$\text{Ca}^+$ and $\text{Ca}^+$-$\text{Ca}^+$ states, as well as mixed-species Greenberger-Horne-Zeilinger (GHZ) states of up to four qubits. We demonstrate storage of the remotely-entangled memory qubits for $\sim10~\text{s}$, more than $100\times$ the creation time. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_14334 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Multipartite Mixed-Species Entanglement over a Quantum Network Main, D. Drmota, P. Ainley, E. M. Agrawal, A. Webb, D. Saner, S. Bazavan, O. Nichol, B. C. Srinivas, R. Nadlinger, D. P. Araneda, G. Lucas, D. M. Quantum Physics We generate multipartite entangled states of two, three and four matter qubits, where the entanglement is distributed over macroscopic distances via a photonic network link. Trapped-ion ${}^{88}\text{Sr}^+$ qubits are entangled directly via the optical fibre link, and the entanglement is subsequently extended to ${}^{43}\text{Ca}^+$ memory qubits co-trapped in each network node, using local mixed-species logic gates. We create remotely entangled $\text{Sr}^+$-$\text{Ca}^+$ and $\text{Ca}^+$-$\text{Ca}^+$ states, as well as mixed-species Greenberger-Horne-Zeilinger (GHZ) states of up to four qubits. We demonstrate storage of the remotely-entangled memory qubits for $\sim10~\text{s}$, more than $100\times$ the creation time. |
| title | Multipartite Mixed-Species Entanglement over a Quantum Network |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2506.14334 |