Sensing microscopic noise events by frequent quantum measurements

Anno: 2024

Autori: Virzi S., Knoll LT., Avella A., Piacentini F., Gherardini S., Gramegna M., Kurizki G., Kofman AG., Degiovanni IP., Genovese M., Caruso F.

Affiliazione autori: Ist Nazl Ric Metrolog, Str Cacce 91, I-10135 Turin, Italy; Consejo Nacl Invest Cient & Tecn, UNIDEF, CIPEIN, CITEDEF, JB La Salle 4397, RA-1603 Villa Martelli, Buenos Aires, Argentina; Ist Nazl Ottica Consiglio Nazl Ric CNR INO, Area Sci Pk, I-34149 Trieste, Italy; Weizmann Inst Sci, Dept Chem & Biol Phys, IL-7610001 Rehovot, Israel; INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy; Univ Florence, Dept Phys & Astron, via G Sansone 1, I-50019 Sesto Fiorentino, Italy; Univ Florence, European Lab Nonlinear Spect LENS, via G Sansone 1, I-50019 Sesto Fiorentino, Italy.

Abstract: We propose and experimentally demonstrate a general method allowing us to unravel microscopic noise events that affect a continuous quantum variable. Such unraveling is achieved by frequent measurements of a discrete variable coupled to the continuous one. The experimental realization involves photons traversing a noisy channel. There, their polarization, whose coupling to the photons’ spatial wave packet is subjected to stochastic noise, is frequently measured in the quantum Zeno regime. The measurements not only preserve the polarization state, but also enable the recording of the full noise statistics from the spatially resolved detection of the photons emerging from the channel. This method proves the possibility of employing photons as quantum noise sensors and robust carriers of information.

Giornale/Rivista: PHYSICAL REVIEW APPLIED

Volume: 21 (3)      Da Pagina: 34014-1  A: 34014-9

Maggiori informazioni: This work was financially supported by the European Union’s Horizon 2020 Research and Innovation Programme under Grant Agreement No. 101113901 (Qu-Test) and FET-OPEN Grant Agreement No. 828946 (PATHOS) . This work was also funded by the project QuaFuPhy (call Trapezio of Fondazione San Paolo) and by the projects EMPIR 19NRM06 METISQ and 20IND05 QADeT. These last two projects received funding by the EMPIR program cofinanced by the Participating States and from the European Union Horizon 2020 Research and Innovation Programme. G.K. acknowledges support from DFG (FOR 2724) and QUANTERA (PACE -IN) . The work was devised by G.K., F.C., M.Gen. and I.P.D., with the help of S.V., A.A., F.P., M.Gram and S.G. Theo- retical framework was provided by G.K., A.K., F.C., I.P.D. and S.G. The experiment and the data analysis were run by S.V. and L.T.K. (principal investigators) , under the super- vision of A.A., F.P., I.P.D. and M.Gen. (responsible of the laboratories) . The manuscript was written with inputs from all the authors.
Parole chiavi: Laser Irradiation; Zeno; Spectroscopy; Dynamics; Paradox
DOI: 10.1103/PhysRevApplied.21.034014

Citazioni: 1
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-05-04
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