Using non-Gaussian quantum states for detection of a given phase shift
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866911874475360256 |
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| author | Gorshenin, V. L. Khalili, F. Ya. |
| author_facet | Gorshenin, V. L. Khalili, F. Ya. |
| contents | Injecting a non-Gaussian (Fock or Shrödinger cat) quantum state into the dark port of a two-arm interferometer and a strong classical light into the bright one, it is possible, in principle, to detect a given phase shift unambiguously using the orthogonality between the original and displaced in the interferometer non-Gaussian states.
The optical losses degrade the sensitivity, introducing the finite "false positive" and "false negative" detection errors. However, using the state-of-art photodetectors, it is still possible to obtain better detection fidelity than in the case of Gaussian quantum states. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_07049 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Using non-Gaussian quantum states for detection of a given phase shift Gorshenin, V. L. Khalili, F. Ya. Quantum Physics Injecting a non-Gaussian (Fock or Shrödinger cat) quantum state into the dark port of a two-arm interferometer and a strong classical light into the bright one, it is possible, in principle, to detect a given phase shift unambiguously using the orthogonality between the original and displaced in the interferometer non-Gaussian states. The optical losses degrade the sensitivity, introducing the finite "false positive" and "false negative" detection errors. However, using the state-of-art photodetectors, it is still possible to obtain better detection fidelity than in the case of Gaussian quantum states. |
| title | Using non-Gaussian quantum states for detection of a given phase shift |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2405.07049 |