Linear-optical test of quantum contextuality with sequential measurements
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2026
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866917507841916928 |
|---|---|
| author | Liu, Jiaqi Olamaei, Bita Zhang, Lijian Asadian, Ali Rahimi-Keshari, Saleh |
| author_facet | Liu, Jiaqi Olamaei, Bita Zhang, Lijian Asadian, Ali Rahimi-Keshari, Saleh |
| contents | Quantum contextuality provides a fundamental signature of nonclassical behavior that cannot be explained by noncontextual hidden-variable models. We propose and experimentally implement a linear-optical setup for demonstrating Kochen-Specker contextuality via a violation of the KCBS inequality using single photons. Our scheme employs sequential measurements realized with linear-optical networks and on-off photodetectors. The construction ensures that each co-measured observable is implemented by the same physical operation across different contexts. Our experimental results demonstrate a clear violation of the KCBS inequality and robustness against photon loss. Beyond fundamental investigations, the proposed setup provides a practical tool for probing non-classicality and photon-number statistics of quantum states, which in turn enables the verification of single-photon sources. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_18112 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Linear-optical test of quantum contextuality with sequential measurements Liu, Jiaqi Olamaei, Bita Zhang, Lijian Asadian, Ali Rahimi-Keshari, Saleh Quantum Physics Quantum contextuality provides a fundamental signature of nonclassical behavior that cannot be explained by noncontextual hidden-variable models. We propose and experimentally implement a linear-optical setup for demonstrating Kochen-Specker contextuality via a violation of the KCBS inequality using single photons. Our scheme employs sequential measurements realized with linear-optical networks and on-off photodetectors. The construction ensures that each co-measured observable is implemented by the same physical operation across different contexts. Our experimental results demonstrate a clear violation of the KCBS inequality and robustness against photon loss. Beyond fundamental investigations, the proposed setup provides a practical tool for probing non-classicality and photon-number statistics of quantum states, which in turn enables the verification of single-photon sources. |
| title | Linear-optical test of quantum contextuality with sequential measurements |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2605.18112 |