Photon Phase Delay Sensing with Sub-Attosecond Uncertainty
Anno: 2024
Autori: Sgobba F., Andrisani A., Santamaria Amato L.
Affiliazione autori: Italian Space Agcy ASI, Ctr Spaziale Giuseppe Colombo, Local Terlecchia, I-75100 Matera, Italy; Natl Inst Opt CNR INO, Natl Council Res, Via Campi Flegrei N 34, I-80078 Pozzuoli, Italy.
Abstract: 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.
Giornale/Rivista: SENSORS
Volume: 24 (7) Da Pagina: 2202-1 A: 2202-18
Maggiori informazioni: We wish to acknowledge Graziano Spinelli for technical support.Parole chiavi: Hong-Ou-Mandel interferometry; Cramer-Rao bound; phase delay estimationDOI: 10.3390/s24072202Citazioni: 1dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-06-29Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca qui
