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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2507.11342 |
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| _version_ | 1866911058062475264 |
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| author | Shen, Yi-Xin Cao, Zhou-Kai Leng, Jian Wang, Xiang-Bin |
| author_facet | Shen, Yi-Xin Cao, Zhou-Kai Leng, Jian Wang, Xiang-Bin |
| contents | We propose a channel-loss-independent quantum-enhanced interferometer. In our scheme, the Fisher information for phase difference of weak light from a remote star remains constant under arbitrarily large channel loss, and the angular resolution of our method is better than that of prior quantum-enhanced methods in the long-baseline regime. Moreover, our method requires only threshold detectors and tunable coherent state or two-mode squeezed state sources, both of which are matured technologies nowadays. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_11342 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Channel-loss-independent quantum-enhanced interferometer Shen, Yi-Xin Cao, Zhou-Kai Leng, Jian Wang, Xiang-Bin Quantum Physics We propose a channel-loss-independent quantum-enhanced interferometer. In our scheme, the Fisher information for phase difference of weak light from a remote star remains constant under arbitrarily large channel loss, and the angular resolution of our method is better than that of prior quantum-enhanced methods in the long-baseline regime. Moreover, our method requires only threshold detectors and tunable coherent state or two-mode squeezed state sources, both of which are matured technologies nowadays. |
| title | Channel-loss-independent quantum-enhanced interferometer |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2507.11342 |