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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2412.04838 |
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| _version_ | 1866916510657675264 |
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| author | Zhong, Zi-Rui Su, Xia-Lin Hu, Xiang-Ming Chen, Ke-Xuan Xu, Hui-Lin Zhang, Yan Wu, Qing-Lin |
| author_facet | Zhong, Zi-Rui Su, Xia-Lin Hu, Xiang-Ming Chen, Ke-Xuan Xu, Hui-Lin Zhang, Yan Wu, Qing-Lin |
| contents | Postselected weak measurement has shown significant potential for detecting small physical effects due to its unique weak-value-amplification phenomenon. Previous works suggest that Heisenberg-limit precision can be attained using only the optical coherent states. However, the measurement object is the distribution of postselection, limiting the practical applicability. Here, we demonstrate that the output photons can also reach the quantum scale by utilizing the Fisher information transfer effect. In addition, we consider the insertion of a power-recycling cavity and demonstrate its positive impact on the distribution of postselection. Our results enhance the quantum metrological advantages of the postselection strategy and broaden its application scope. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_04838 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Transfer of Fisher Information in Quantum Postselection Metrology Zhong, Zi-Rui Su, Xia-Lin Hu, Xiang-Ming Chen, Ke-Xuan Xu, Hui-Lin Zhang, Yan Wu, Qing-Lin Quantum Physics Postselected weak measurement has shown significant potential for detecting small physical effects due to its unique weak-value-amplification phenomenon. Previous works suggest that Heisenberg-limit precision can be attained using only the optical coherent states. However, the measurement object is the distribution of postselection, limiting the practical applicability. Here, we demonstrate that the output photons can also reach the quantum scale by utilizing the Fisher information transfer effect. In addition, we consider the insertion of a power-recycling cavity and demonstrate its positive impact on the distribution of postselection. Our results enhance the quantum metrological advantages of the postselection strategy and broaden its application scope. |
| title | Transfer of Fisher Information in Quantum Postselection Metrology |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2412.04838 |