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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2024
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| Sujets: | |
| Accès en ligne: | https://arxiv.org/abs/2408.13817 |
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| _version_ | 1866908321351467008 |
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| author | Zhang, Zhucheng Zhang, Xue Liu, Jing Dong, Hui |
| author_facet | Zhang, Zhucheng Zhang, Xue Liu, Jing Dong, Hui |
| contents | Conventional absorption spectroscopy relies on coherent laser sources, and in turn suffers from the inherent limitation of shot noise, especially in estimating weak absorption. Here we propose a measurement strategy with correlated photons to determine the weak absorption by distinguishing the output with and without photons, dubbed as the on-off measurement. We demonstrate that absorption spectroscopy that incorporates quantum correlations is capable of estimating weak absorption down to a single-photon level, even in noisy environments, achieving a precision comparable to that obtained through 1000 photons in conventional absorption spectroscopy. Our strategy provides a new method to probe fragile systems with weak absorption, avoiding the occurrence of light-induced damage. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_13817 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Quantum-enhanced weak absorption estimation with correlated photons Zhang, Zhucheng Zhang, Xue Liu, Jing Dong, Hui Quantum Physics Conventional absorption spectroscopy relies on coherent laser sources, and in turn suffers from the inherent limitation of shot noise, especially in estimating weak absorption. Here we propose a measurement strategy with correlated photons to determine the weak absorption by distinguishing the output with and without photons, dubbed as the on-off measurement. We demonstrate that absorption spectroscopy that incorporates quantum correlations is capable of estimating weak absorption down to a single-photon level, even in noisy environments, achieving a precision comparable to that obtained through 1000 photons in conventional absorption spectroscopy. Our strategy provides a new method to probe fragile systems with weak absorption, avoiding the occurrence of light-induced damage. |
| title | Quantum-enhanced weak absorption estimation with correlated photons |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2408.13817 |