Enhanced quantum sensing with hybrid exceptional-diabolic singularities
Fuente:
arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Acceso en línea: | |
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| _version_ | 1866916786368151552 |
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| author | Naikoo, Javid Chhajlany, Ravindra W. Miranowicz, Adam |
| author_facet | Naikoo, Javid Chhajlany, Ravindra W. Miranowicz, Adam |
| contents | We report an enhanced sensitivity for detecting linear perturbations near hybrid (doubly degenerated) exceptional-diabolic (HED) singular points in a four mode bosonic system. The sensitivity enhancement is attributed to a singular response function, with the pole order determining the scaling of estimation error. At HED singular points, the error scaling exhibits a twofold improvement over non-HED singular points. The ultimate bound on estimation error is derived via quantum Fisher information, with heterodyne detection identified as the measurement achieving this optimal scaling. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_03780 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Enhanced quantum sensing with hybrid exceptional-diabolic singularities Naikoo, Javid Chhajlany, Ravindra W. Miranowicz, Adam Quantum Physics We report an enhanced sensitivity for detecting linear perturbations near hybrid (doubly degenerated) exceptional-diabolic (HED) singular points in a four mode bosonic system. The sensitivity enhancement is attributed to a singular response function, with the pole order determining the scaling of estimation error. At HED singular points, the error scaling exhibits a twofold improvement over non-HED singular points. The ultimate bound on estimation error is derived via quantum Fisher information, with heterodyne detection identified as the measurement achieving this optimal scaling. |
| title | Enhanced quantum sensing with hybrid exceptional-diabolic singularities |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2502.03780 |