Postselected Entangled States by Photon Detection
Fuente:
arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866908660620328960 |
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| author | Rosario, Pedro Cidrim, A. Bachelard, R. |
| author_facet | Rosario, Pedro Cidrim, A. Bachelard, R. |
| contents | Postselection is a non-deterministic mechanism to entangle subsystems, often used in weakly-excited systems. We here show how highly-excited ensembles of two-level emitters can be entangled by photon detection. A collective spin is formed, characterized by a squeezing parameter detected by far-field measurements. While decoherence is detrimental to this conditional entanglement, successive photon detections act as a purification process and restores the spin squeezing. Our work opens up new avenues for the generation of postselected entanglement in open quantum systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_14000 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Postselected Entangled States by Photon Detection Rosario, Pedro Cidrim, A. Bachelard, R. Quantum Physics Postselection is a non-deterministic mechanism to entangle subsystems, often used in weakly-excited systems. We here show how highly-excited ensembles of two-level emitters can be entangled by photon detection. A collective spin is formed, characterized by a squeezing parameter detected by far-field measurements. While decoherence is detrimental to this conditional entanglement, successive photon detections act as a purification process and restores the spin squeezing. Our work opens up new avenues for the generation of postselected entanglement in open quantum systems. |
| title | Postselected Entangled States by Photon Detection |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2511.14000 |