Zeptosecond-scale single-photon gyroscope
Fuente:
arXiv
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| Autores principales: | , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866914870874603520 |
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| author | Sgobba, Fabrizio Triggiani, Danilo Tamma, Vincenzo De Natale, Paolo Gagliardi, Gianluca Avino, Saverio Amato, Luigi Santamaria |
| author_facet | Sgobba, Fabrizio Triggiani, Danilo Tamma, Vincenzo De Natale, Paolo Gagliardi, Gianluca Avino, Saverio Amato, Luigi Santamaria |
| contents | This paper presents an all-fiber telecom-range optical gyroscope employing a spontaneous parametric down conversion crystal to produce ultra-low intensity thermal light by tracing-out one of the heralded photons. The prototype exhibits a detection limit on photon delay measurements of $249$ zs over a $72$ s averaging time and 26 zs in differential delay measurements at $t=10^4$ s averaging. The detection scheme proves to be the most resource-efficient possible, saturating $>99.5\%$ of the Cramér-Rao bound. These results are groundbreaking in the context of low-photon regime quantum metrology, paving the way to novel experimental configurations to bridge quantum optics with special or general relativity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_15385 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Zeptosecond-scale single-photon gyroscope Sgobba, Fabrizio Triggiani, Danilo Tamma, Vincenzo De Natale, Paolo Gagliardi, Gianluca Avino, Saverio Amato, Luigi Santamaria Quantum Physics This paper presents an all-fiber telecom-range optical gyroscope employing a spontaneous parametric down conversion crystal to produce ultra-low intensity thermal light by tracing-out one of the heralded photons. The prototype exhibits a detection limit on photon delay measurements of $249$ zs over a $72$ s averaging time and 26 zs in differential delay measurements at $t=10^4$ s averaging. The detection scheme proves to be the most resource-efficient possible, saturating $>99.5\%$ of the Cramér-Rao bound. These results are groundbreaking in the context of low-photon regime quantum metrology, paving the way to novel experimental configurations to bridge quantum optics with special or general relativity. |
| title | Zeptosecond-scale single-photon gyroscope |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2402.15385 |