Enhanced Resolution of Lossy Interferometry by Coherent Amplification of Single Photons
Anno: 2010
Autori: Vitelli C., Spagnolo N., Toffoli L., Sciarrino F., De Martini F.
Affiliazione autori: Sapienza Univ Roma, Dipartimento Fis, I-00185 Rome, Italy; Consorzio Nazl Interuniv Sci Fis Materia, I-00185 Rome, Italy; Ist Nazl Ottica, I-50125 Florence, Italy; Accademia Nazl Lincei, I-00165 Rome, Italy.
Abstract: In the quantum sensing context most of the efforts to design novel quantum techniques of sensing have been constrained to idealized, noise-free scenarios, in which effects of environmental disturbances could be neglected. In this work, we propose to exploit optical parametric amplification to boost interferometry sensitivity in the presence of losses in a minimally invasive scenario. By performing the amplification process on the microscopic probe after the interaction with the sample, we can beat the losses’ detrimental effect on the phase measurement which affects the single-photon state after its interaction with the sample, and thus improve the achievable sensitivity.
Giornale/Rivista: PHYSICAL REVIEW LETTERS
Volume: 105 (11) Da Pagina: 113602-1 A: 113602-4
Maggiori informazioni: We acknowledge support by the Futuro in Ricerca Project HYTEQ and Progetto d’Ateneo of Sapienza Universita di Roma.Parole chiavi: Standard Quantum Limit; Parametric Amplification; States; EntanglementDOI: 10.1103/PhysRevLett.105.113602Citazioni: 24dati 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 quiLink per visualizzare la citazioni su IsiWeb: Clicca qui
