Optimal Dose-Limited Phase Estimation without Entanglement
Fuente:
arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2022
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| _version_ | 1866910709322874880 |
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| author | Koppell, Stewart A. Kasevich, Mark A. |
| author_facet | Koppell, Stewart A. Kasevich, Mark A. |
| contents | Phase estimation is one of the most important facets of quantum metrology, with applications in sensing, microscopy, and quantum computation. When estimating a phase shift in a lossy medium, there is an upper bound on the attainable information per particle sent through the phase shift. Previously, only entanglement-enhanced measurements have been shown to saturate this bound. We introduce a measurement scheme which can saturate the bound without relying on entanglement. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2203_10137 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Optimal Dose-Limited Phase Estimation without Entanglement Koppell, Stewart A. Kasevich, Mark A. Quantum Physics Phase estimation is one of the most important facets of quantum metrology, with applications in sensing, microscopy, and quantum computation. When estimating a phase shift in a lossy medium, there is an upper bound on the attainable information per particle sent through the phase shift. Previously, only entanglement-enhanced measurements have been shown to saturate this bound. We introduce a measurement scheme which can saturate the bound without relying on entanglement. |
| title | Optimal Dose-Limited Phase Estimation without Entanglement |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2203.10137 |