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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2512.10378 |
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| _version_ | 1866917360491823104 |
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| author | Li, Pei-Zhe Bose, Soumyakanti Jeong, Hyunseok Munro, William J. Nemoto, Kae Piparo, Nicolò Lo |
| author_facet | Li, Pei-Zhe Bose, Soumyakanti Jeong, Hyunseok Munro, William J. Nemoto, Kae Piparo, Nicolò Lo |
| contents | We present a feasible and scalable approach to testing Bell nonlocality and implementing device-independent quantum key distribution (DI-QKD) between distant atomic states in cavity-based architectures, mediated by hybrid atom-light entanglement. We develop a full theoretical model that incorporates realistic sources of noise -- such as transmission loss, limited light-matter coupling efficiency, and imperfect detection. Our analysis shows that strong Bell-Clauser-Horne-Shimony-Holt (CHSH) violations and secure key generation over tens of kilometers are within reach using current or near-term technology. These results position cavity-based platforms with coherent-state encodings as a promising foundation for future scalable, DI quantum communication networks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_10378 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Loophole-free Bell-inequality violation between atomic states in cavity-QED systems mediated by hybrid atom-light entanglement Li, Pei-Zhe Bose, Soumyakanti Jeong, Hyunseok Munro, William J. Nemoto, Kae Piparo, Nicolò Lo Quantum Physics We present a feasible and scalable approach to testing Bell nonlocality and implementing device-independent quantum key distribution (DI-QKD) between distant atomic states in cavity-based architectures, mediated by hybrid atom-light entanglement. We develop a full theoretical model that incorporates realistic sources of noise -- such as transmission loss, limited light-matter coupling efficiency, and imperfect detection. Our analysis shows that strong Bell-Clauser-Horne-Shimony-Holt (CHSH) violations and secure key generation over tens of kilometers are within reach using current or near-term technology. These results position cavity-based platforms with coherent-state encodings as a promising foundation for future scalable, DI quantum communication networks. |
| title | Loophole-free Bell-inequality violation between atomic states in cavity-QED systems mediated by hybrid atom-light entanglement |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2512.10378 |