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| Format: | Preprint |
| Veröffentlicht: |
2025
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| Online-Zugang: | https://arxiv.org/abs/2508.08439 |
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| _version_ | 1866916892559540224 |
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| author | Lin, Xiaoshui Mei, Yefeng Zhang, Chuanwei |
| author_facet | Lin, Xiaoshui Mei, Yefeng Zhang, Chuanwei |
| contents | Single neutral atoms in optical tweezer arrays offer a promising platform for high-fidelity quantum computing at local nodes. Nonetheless, creating entanglement between remote nodes in a distributed quantum network remains challenging due to inherently weak atom-light coupling. Here, we design a distributed quantum network architecture in which cold atomic ensembles with strong atom-light interactions act as quantum antennas, interfacing single-atom qubits with flying photons to enable high-efficiency atom-photon entanglement generation -- analogous to the role of antennas in classical communication. Using realistic experimental parameters, we estimate an efficiency of $η\simeq 0.548$ for generating atom-photon entanglement, a probability of $P_{E} \simeq 6 \%$ for generating atom-atom entanglement, and a remote entanglement generation rate of $16.6 $ kHz. This performance not only surpasses that of state-of-the-art cavity-based or high-numerical-aperture-lens-based architectures but also offers notable advantages in simplicity, tunability, and experimental accessibility. Our scheme also integrates a long-lived quantum memory, providing a storage advantage for quantum repeater design. By leveraging the complementary strengths of single-atom qubits for local operations and cold atomic ensembles for networking, this approach paves the way for scalable distributed quantum computing and sensing. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_08439 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Cold atomic ensembles as quantum antennas for distributed networks of single-atom arrays Lin, Xiaoshui Mei, Yefeng Zhang, Chuanwei Quantum Physics Single neutral atoms in optical tweezer arrays offer a promising platform for high-fidelity quantum computing at local nodes. Nonetheless, creating entanglement between remote nodes in a distributed quantum network remains challenging due to inherently weak atom-light coupling. Here, we design a distributed quantum network architecture in which cold atomic ensembles with strong atom-light interactions act as quantum antennas, interfacing single-atom qubits with flying photons to enable high-efficiency atom-photon entanglement generation -- analogous to the role of antennas in classical communication. Using realistic experimental parameters, we estimate an efficiency of $η\simeq 0.548$ for generating atom-photon entanglement, a probability of $P_{E} \simeq 6 \%$ for generating atom-atom entanglement, and a remote entanglement generation rate of $16.6 $ kHz. This performance not only surpasses that of state-of-the-art cavity-based or high-numerical-aperture-lens-based architectures but also offers notable advantages in simplicity, tunability, and experimental accessibility. Our scheme also integrates a long-lived quantum memory, providing a storage advantage for quantum repeater design. By leveraging the complementary strengths of single-atom qubits for local operations and cold atomic ensembles for networking, this approach paves the way for scalable distributed quantum computing and sensing. |
| title | Cold atomic ensembles as quantum antennas for distributed networks of single-atom arrays |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2508.08439 |