[{"citation":{"mla":"Kapoor, Sanjay, et al. “Electro-Optic Frequency Shift of Single Photons from a Quantum Dot.” <i>Nanophotonics</i>, vol. 14, no. 11, Walter de Gruyter GmbH, 2025, pp. 1775–82, doi:<a href=\"https://doi.org/10.1515/nanoph-2024-0550\">10.1515/nanoph-2024-0550</a>.","bibtex":"@article{Kapoor_Rodek_Mikołajczyk_Szuniewicz_Sośnicki_Kazimierczuk_Kossacki_Karpiński_2025, title={Electro-optic frequency shift of single photons from a quantum dot}, volume={14}, DOI={<a href=\"https://doi.org/10.1515/nanoph-2024-0550\">10.1515/nanoph-2024-0550</a>}, number={11}, journal={Nanophotonics}, publisher={Walter de Gruyter GmbH}, author={Kapoor, Sanjay and Rodek, Aleksander and Mikołajczyk, Michał and Szuniewicz, Jerzy and Sośnicki, Filip Maksymilian and Kazimierczuk, Tomasz and Kossacki, Piotr and Karpiński, Michał}, year={2025}, pages={1775–1782} }","short":"S. Kapoor, A. Rodek, M. Mikołajczyk, J. Szuniewicz, F.M. Sośnicki, T. Kazimierczuk, P. Kossacki, M. Karpiński, Nanophotonics 14 (2025) 1775–1782.","apa":"Kapoor, S., Rodek, A., Mikołajczyk, M., Szuniewicz, J., Sośnicki, F. M., Kazimierczuk, T., Kossacki, P., &#38; Karpiński, M. (2025). Electro-optic frequency shift of single photons from a quantum dot. <i>Nanophotonics</i>, <i>14</i>(11), 1775–1782. <a href=\"https://doi.org/10.1515/nanoph-2024-0550\">https://doi.org/10.1515/nanoph-2024-0550</a>","chicago":"Kapoor, Sanjay, Aleksander Rodek, Michał Mikołajczyk, Jerzy Szuniewicz, Filip Maksymilian Sośnicki, Tomasz Kazimierczuk, Piotr Kossacki, and Michał Karpiński. “Electro-Optic Frequency Shift of Single Photons from a Quantum Dot.” <i>Nanophotonics</i> 14, no. 11 (2025): 1775–82. <a href=\"https://doi.org/10.1515/nanoph-2024-0550\">https://doi.org/10.1515/nanoph-2024-0550</a>.","ieee":"S. Kapoor <i>et al.</i>, “Electro-optic frequency shift of single photons from a quantum dot,” <i>Nanophotonics</i>, vol. 14, no. 11, pp. 1775–1782, 2025, doi: <a href=\"https://doi.org/10.1515/nanoph-2024-0550\">10.1515/nanoph-2024-0550</a>.","ama":"Kapoor S, Rodek A, Mikołajczyk M, et al. Electro-optic frequency shift of single photons from a quantum dot. <i>Nanophotonics</i>. 2025;14(11):1775-1782. doi:<a href=\"https://doi.org/10.1515/nanoph-2024-0550\">10.1515/nanoph-2024-0550</a>"},"page":"1775-1782","intvolume":"        14","publication_status":"published","publication_identifier":{"issn":["2192-8614"]},"main_file_link":[{"url":"https://www.degruyterbrill.com/document/doi/10.1515/nanoph-2024-0550/html"}],"doi":"10.1515/nanoph-2024-0550","date_updated":"2026-01-26T14:35:42Z","author":[{"first_name":"Sanjay","full_name":"Kapoor, Sanjay","last_name":"Kapoor"},{"first_name":"Aleksander","last_name":"Rodek","full_name":"Rodek, Aleksander"},{"first_name":"Michał","full_name":"Mikołajczyk, Michał","last_name":"Mikołajczyk"},{"full_name":"Szuniewicz, Jerzy","last_name":"Szuniewicz","first_name":"Jerzy"},{"first_name":"Filip Maksymilian","last_name":"Sośnicki","orcid":"0000-0002-2465-4645","full_name":"Sośnicki, Filip Maksymilian","id":"106751"},{"last_name":"Kazimierczuk","full_name":"Kazimierczuk, Tomasz","first_name":"Tomasz"},{"last_name":"Kossacki","full_name":"Kossacki, Piotr","first_name":"Piotr"},{"first_name":"Michał","last_name":"Karpiński","full_name":"Karpiński, Michał"}],"volume":14,"status":"public","type":"journal_article","article_type":"original","_id":"63734","user_id":"106751","department":[{"_id":"623"},{"_id":"288"},{"_id":"15"}],"year":"2025","issue":"11","title":"Electro-optic frequency shift of single photons from a quantum dot","publisher":"Walter de Gruyter GmbH","date_created":"2026-01-26T14:34:16Z","abstract":[{"text":"Quantum dots (QDs) are a promising source of single photons mainly due to their on-demand operation. However, their emission wavelength depends on their size and immediate surroundings in the solid-state environment. By applying a serrodyne electro-optic phase modulation, we achieve a spectral shift up to 0.01 nm (3.5 GHz) while preserving the purity and indistinguishability of the photons. This method provides an efficient and scalable approach for tuning the emission wavelength of QDs without relying on nonlinear frequency mixing or probabilistic processes. Our results show that the electro-optic phase modulation enables stable and tunable spectral shifts, making it suitable for applications such as quantum communication, quantum key distribution, and primarily integrating remote quantum dot sources into large-scale quantum networks.","lang":"eng"}],"publication":"Nanophotonics","language":[{"iso":"eng"}]},{"author":[{"first_name":"Sanjay","last_name":"Kapoor","full_name":"Kapoor, Sanjay"},{"last_name":"Sośnicki","orcid":"0000-0002-2465-4645","full_name":"Sośnicki, Filip Maksymilian","id":"106751","first_name":"Filip Maksymilian"},{"first_name":"Michał","last_name":"Karpiński","full_name":"Karpiński, Michał"}],"volume":10,"date_updated":"2026-01-26T14:27:42Z","main_file_link":[{"url":"https://pubs.aip.org/aip/app/article/10/9/096111/3364187"}],"doi":"10.1063/5.0270904","publication_status":"published","publication_identifier":{"issn":["2378-0967"]},"citation":{"bibtex":"@article{Kapoor_Sośnicki_Karpiński_2025, title={Aberration-optimized electro-optic time lens model using a tunable aperture}, volume={10}, DOI={<a href=\"https://doi.org/10.1063/5.0270904\">10.1063/5.0270904</a>}, number={9096111}, journal={APL Photonics}, publisher={AIP Publishing}, author={Kapoor, Sanjay and Sośnicki, Filip Maksymilian and Karpiński, Michał}, year={2025} }","mla":"Kapoor, Sanjay, et al. “Aberration-Optimized Electro-Optic Time Lens Model Using a Tunable Aperture.” <i>APL Photonics</i>, vol. 10, no. 9, 096111, AIP Publishing, 2025, doi:<a href=\"https://doi.org/10.1063/5.0270904\">10.1063/5.0270904</a>.","short":"S. Kapoor, F.M. Sośnicki, M. Karpiński, APL Photonics 10 (2025).","apa":"Kapoor, S., Sośnicki, F. M., &#38; Karpiński, M. (2025). Aberration-optimized electro-optic time lens model using a tunable aperture. <i>APL Photonics</i>, <i>10</i>(9), Article 096111. <a href=\"https://doi.org/10.1063/5.0270904\">https://doi.org/10.1063/5.0270904</a>","ama":"Kapoor S, Sośnicki FM, Karpiński M. Aberration-optimized electro-optic time lens model using a tunable aperture. <i>APL Photonics</i>. 2025;10(9). doi:<a href=\"https://doi.org/10.1063/5.0270904\">10.1063/5.0270904</a>","chicago":"Kapoor, Sanjay, Filip Maksymilian Sośnicki, and Michał Karpiński. “Aberration-Optimized Electro-Optic Time Lens Model Using a Tunable Aperture.” <i>APL Photonics</i> 10, no. 9 (2025). <a href=\"https://doi.org/10.1063/5.0270904\">https://doi.org/10.1063/5.0270904</a>.","ieee":"S. Kapoor, F. M. Sośnicki, and M. Karpiński, “Aberration-optimized electro-optic time lens model using a tunable aperture,” <i>APL Photonics</i>, vol. 10, no. 9, Art. no. 096111, 2025, doi: <a href=\"https://doi.org/10.1063/5.0270904\">10.1063/5.0270904</a>."},"intvolume":"        10","user_id":"106751","department":[{"_id":"623"},{"_id":"288"},{"_id":"15"}],"_id":"63732","article_type":"original","article_number":"096111","type":"journal_article","status":"public","date_created":"2026-01-26T14:24:34Z","publisher":"AIP Publishing","title":"Aberration-optimized electro-optic time lens model using a tunable aperture","issue":"9","year":"2025","language":[{"iso":"eng"}],"publication":"APL Photonics","abstract":[{"text":"Time lenses have been recognized as crucial components for manipulating ultrafast optical pulses in various applications, from ultrafast spectroscopy to the interfacing of optical quantum systems. A time lens is characterized by its chirp rate, which determines the focusing strength of the time lens, and accurate knowledge of this chirp is critical for precise dispersion compensation and minimizing aberrations. Here, we introduce a tunable time aperture model for sinusoidal time lenses that provides a more accurate estimate of the effective chirp rate without modifying the device. We derive a closed-form expression for the maximum phase error and show how it depends on the time aperture. We experimentally demonstrate a 1.6-fold improvement in spectral bandwidth compression of Gaussian pulses compared to the conventional approach. Our framework offers a practical tool for designing efficient temporal optical systems, benefiting applications in both classical and quantum optics where accurate spectro-temporal shaping is essential.","lang":"eng"}]},{"language":[{"iso":"eng"}],"article_number":"023703","department":[{"_id":"623"},{"_id":"15"},{"_id":"288"}],"user_id":"27150","_id":"63733","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"}],"publication":"Physical Review A","type":"journal_article","doi":"10.1103/7ckm-tm3r","title":"Time-resolved second-order autocorrelation function of parametric down-conversion","volume":112,"author":[{"first_name":"Dmitri B.","last_name":"Horoshko","full_name":"Horoshko, Dmitri B."},{"full_name":"Srivastava, Shivang","last_name":"Srivastava","first_name":"Shivang"},{"first_name":"Filip Maksymilian","last_name":"Sośnicki","orcid":"0000-0002-2465-4645","full_name":"Sośnicki, Filip Maksymilian","id":"106751"},{"full_name":"Mikołajczyk, Michał","last_name":"Mikołajczyk","first_name":"Michał"},{"first_name":"Michał","last_name":"Karpiński","full_name":"Karpiński, Michał"},{"last_name":"Brecht","orcid":"0000-0003-4140-0556 ","id":"27150","full_name":"Brecht, Benjamin","first_name":"Benjamin"},{"full_name":"Kolobov, Mikhail I.","last_name":"Kolobov","first_name":"Mikhail I."}],"date_created":"2026-01-26T14:28:22Z","publisher":"American Physical Society (APS)","date_updated":"2026-03-25T07:59:53Z","intvolume":"       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>","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>.","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).","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>.","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>"},"year":"2025","issue":"2","publication_identifier":{"issn":["2469-9926","2469-9934"]},"publication_status":"published"}]