{"type":"journal_article","date_updated":"2026-01-26T15:05:36Z","article_number":"023703","publisher":"American Physical Society (APS)","language":[{"iso":"eng"}],"issue":"2","volume":112,"citation":{"apa":"Horoshko, D. B., Srivastava, S., Sośnicki, F. M., Mikołajczyk, M., Karpiński, M., Brecht, B., &#38; Kolobov, M. I. (2025). Time-resolved second-order autocorrelation function of parametric down-conversion. <i>Physical Review A</i>, <i>112</i>(2), Article 023703. <a href=\"https://doi.org/10.1103/7ckm-tm3r\">https://doi.org/10.1103/7ckm-tm3r</a>","ama":"Horoshko DB, Srivastava S, Sośnicki FM, et al. Time-resolved second-order autocorrelation function of parametric down-conversion. <i>Physical Review A</i>. 2025;112(2). doi:<a href=\"https://doi.org/10.1103/7ckm-tm3r\">10.1103/7ckm-tm3r</a>","mla":"Horoshko, Dmitri B., et al. “Time-Resolved Second-Order Autocorrelation Function of Parametric down-Conversion.” <i>Physical Review A</i>, vol. 112, no. 2, 023703, American Physical Society (APS), 2025, doi:<a href=\"https://doi.org/10.1103/7ckm-tm3r\">10.1103/7ckm-tm3r</a>.","ieee":"D. B. Horoshko <i>et al.</i>, “Time-resolved second-order autocorrelation function of parametric down-conversion,” <i>Physical Review A</i>, vol. 112, no. 2, Art. no. 023703, 2025, doi: <a href=\"https://doi.org/10.1103/7ckm-tm3r\">10.1103/7ckm-tm3r</a>.","chicago":"Horoshko, Dmitri B., Shivang Srivastava, Filip Maksymilian Sośnicki, Michał Mikołajczyk, Michał Karpiński, Benjamin Brecht, and Mikhail I. Kolobov. “Time-Resolved Second-Order Autocorrelation Function of Parametric down-Conversion.” <i>Physical Review A</i> 112, no. 2 (2025). <a href=\"https://doi.org/10.1103/7ckm-tm3r\">https://doi.org/10.1103/7ckm-tm3r</a>.","bibtex":"@article{Horoshko_Srivastava_Sośnicki_Mikołajczyk_Karpiński_Brecht_Kolobov_2025, title={Time-resolved second-order autocorrelation function of parametric down-conversion}, volume={112}, DOI={<a href=\"https://doi.org/10.1103/7ckm-tm3r\">10.1103/7ckm-tm3r</a>}, number={2023703}, journal={Physical Review A}, publisher={American Physical Society (APS)}, author={Horoshko, Dmitri B. and Srivastava, Shivang and Sośnicki, Filip Maksymilian and Mikołajczyk, Michał and Karpiński, Michał and Brecht, Benjamin and Kolobov, Mikhail I.}, year={2025} }","short":"D.B. Horoshko, S. Srivastava, F.M. Sośnicki, M. Mikołajczyk, M. Karpiński, B. Brecht, M.I. Kolobov, Physical Review A 112 (2025)."},"author":[{"first_name":"Dmitri B.","last_name":"Horoshko","full_name":"Horoshko, Dmitri B."},{"last_name":"Srivastava","first_name":"Shivang","full_name":"Srivastava, Shivang"},{"orcid":"0000-0002-2465-4645","full_name":"Sośnicki, Filip Maksymilian","first_name":"Filip Maksymilian","last_name":"Sośnicki","id":"106751"},{"last_name":"Mikołajczyk","first_name":"Michał","full_name":"Mikołajczyk, Michał"},{"first_name":"Michał","last_name":"Karpiński","full_name":"Karpiński, Michał"},{"id":"27150","first_name":"Benjamin","last_name":"Brecht","full_name":"Brecht, Benjamin","orcid":"0000-0003-4140-0556 "},{"first_name":"Mikhail I.","last_name":"Kolobov","full_name":"Kolobov, Mikhail I."}],"title":"Time-resolved second-order autocorrelation function of parametric down-conversion","_id":"63733","intvolume":"       112","doi":"10.1103/7ckm-tm3r","status":"public","abstract":[{"text":"<jats:p>We study a possibility of measuring the time-resolved second-order autocorrelation function of one of two beams generated in type-II parametric down-conversion by means of temporal magnification of this beam, bringing its correlation time from the picosecond to the nanosecond scale, which can be resolved by modern photodetectors. We show that such a measurement enables one to infer directly the degree of global coherence of that beam, which is linked by a simple relation to the number of modes characterizing the entanglement between the two generated beams. We illustrate the proposed method by an example of photon pairs generated in a periodically poled potassium titanyl phosphate (KTP) crystal with a symmetric group velocity matching for various durations of the pump pulse, resulting in different numbers of modes. Our theoretical model also shows that the magnified double-heralded autocorrelation function of one beam exhibits a local maximum around zero delay time, corresponding to photon bunching at a short time scale.</jats:p>","lang":"eng"}],"date_created":"2026-01-26T14:28:22Z","user_id":"27150","publication_identifier":{"issn":["2469-9926","2469-9934"]},"publication_status":"published","department":[{"_id":"623"},{"_id":"15"}],"publication":"Physical Review A","year":"2025"}