Bell state measurements in quantum optics: a review of recent progress and open challenges
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866908990433132544 |
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| author | Bianchi, Luca Marconi, Carlo Bacco, Davide |
| author_facet | Bianchi, Luca Marconi, Carlo Bacco, Davide |
| contents | Bell state measurements, which project bipartite qubit systems onto the maximally entangled Bell basis, are central to a wide range of quantum information processing tasks, including quantum teleportation, entanglement swapping, and fusion-gate quantum computation. In photonic quantum platforms, where information is encoded in optical degrees of freedom, the realization of efficient Bell state measurements is particularly challenging, especially when constrained to linear optical elements. In this review, we provide a comprehensive examination of existing proposals for implementing Bell state measurements, highlighting their fundamental limitations and the strategies developed to overcome them. Additionally, we survey recent advances in Bell state measurements for high-dimensional systems, an area of growing interest due to its relevance in scalable quantum networks and high-capacity quantum communication. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2509_18756 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Bell state measurements in quantum optics: a review of recent progress and open challenges Bianchi, Luca Marconi, Carlo Bacco, Davide Quantum Physics Bell state measurements, which project bipartite qubit systems onto the maximally entangled Bell basis, are central to a wide range of quantum information processing tasks, including quantum teleportation, entanglement swapping, and fusion-gate quantum computation. In photonic quantum platforms, where information is encoded in optical degrees of freedom, the realization of efficient Bell state measurements is particularly challenging, especially when constrained to linear optical elements. In this review, we provide a comprehensive examination of existing proposals for implementing Bell state measurements, highlighting their fundamental limitations and the strategies developed to overcome them. Additionally, we survey recent advances in Bell state measurements for high-dimensional systems, an area of growing interest due to its relevance in scalable quantum networks and high-capacity quantum communication. |
| title | Bell state measurements in quantum optics: a review of recent progress and open challenges |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2509.18756 |