Photon Phase Delay Sensing with Sub-Attosecond Uncertainty

Autor:	Fabrizio Sgobba, Andrea Andrisani, Luigi Santamaria Amato
Jazyk:	angličtina
Rok vydání:	2024
Předmět:	Hong–Ou–Mandel interferometry Cramér–Rao bound phase delay estimation Chemical technology TP1-1185
Zdroj:	Sensors, Vol 24, Iss 7, p 2202 (2024)
Druh dokumentu:	article
ISSN:	1424-8220
DOI:	10.3390/s24072202
Popis:	The application of statistical estimation theory to Hong–Ou–Mandel interferometry led to enticing results in terms of the detection limit for photon reciprocal delay and polarisation measurement. In the following paper, a fully fibre-coupled setup operating in the telecom wavelength region proves to achieve, for the first time, in common-path Hong–Ou–Mandel-based interferometry, a detection limit for photon phase delay at the zeptosecond scale. The experimental results are then framed in a theoretical model by calculating the Cramer–Rao bound (CRB) and, after comparison with the obtained experimental results, it is shown that our setup attains the optimal measurement, nearly saturating CRB.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/efb2eee9320143aea50245663e6df9ce Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF Plný text ve formátu HTML
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