{"doi":"10.1103/physreva.90.023823","publication":"Physical Review A","year":"2014","article_number":"034823","title":"Theory of filtered type-II parametric down-conversion in the continuous-variable domain: Quantifying the impacts of filtering","volume":90,"citation":{"mla":"Christ, Andreas, et al. “Theory of Filtered Type-II Parametric down-Conversion in the Continuous-Variable Domain: Quantifying the Impacts of Filtering.” <i>Physical Review A</i>, vol. 90, no. 2, 034823, 2014, doi:<a href=\"https://doi.org/10.1103/physreva.90.023823\">10.1103/physreva.90.023823</a>.","ama":"Christ A, Lupo C, Reichelt M, Meier T, Silberhorn C. Theory of filtered type-II parametric down-conversion in the continuous-variable domain: Quantifying the impacts of filtering. <i>Physical Review A</i>. 2014;90(2). doi:<a href=\"https://doi.org/10.1103/physreva.90.023823\">10.1103/physreva.90.023823</a>","ieee":"A. Christ, C. Lupo, M. Reichelt, T. Meier, and C. Silberhorn, “Theory of filtered type-II parametric down-conversion in the continuous-variable domain: Quantifying the impacts of filtering,” <i>Physical Review A</i>, vol. 90, no. 2, Art. no. 034823, 2014, doi: <a href=\"https://doi.org/10.1103/physreva.90.023823\">10.1103/physreva.90.023823</a>.","short":"A. Christ, C. Lupo, M. Reichelt, T. Meier, C. Silberhorn, Physical Review A 90 (2014).","bibtex":"@article{Christ_Lupo_Reichelt_Meier_Silberhorn_2014, title={Theory of filtered type-II parametric down-conversion in the continuous-variable domain: Quantifying the impacts of filtering}, volume={90}, DOI={<a href=\"https://doi.org/10.1103/physreva.90.023823\">10.1103/physreva.90.023823</a>}, number={2034823}, journal={Physical Review A}, author={Christ, Andreas and Lupo, Cosmo and Reichelt, Matthias and Meier, Torsten and Silberhorn, Christine}, year={2014} }","chicago":"Christ, Andreas, Cosmo Lupo, Matthias Reichelt, Torsten Meier, and Christine Silberhorn. “Theory of Filtered Type-II Parametric down-Conversion in the Continuous-Variable Domain: Quantifying the Impacts of Filtering.” <i>Physical Review A</i> 90, no. 2 (2014). <a href=\"https://doi.org/10.1103/physreva.90.023823\">https://doi.org/10.1103/physreva.90.023823</a>.","apa":"Christ, A., Lupo, C., Reichelt, M., Meier, T., &#38; Silberhorn, C. (2014). Theory of filtered type-II parametric down-conversion in the continuous-variable domain: Quantifying the impacts of filtering. <i>Physical Review A</i>, <i>90</i>(2), Article 034823. <a href=\"https://doi.org/10.1103/physreva.90.023823\">https://doi.org/10.1103/physreva.90.023823</a>"},"department":[{"_id":"15"},{"_id":"170"},{"_id":"293"},{"_id":"230"},{"_id":"288"}],"publication_status":"published","language":[{"iso":"eng"}],"user_id":"49063","date_updated":"2023-04-16T21:55:08Z","_id":"22956","type":"journal_article","issue":"2","intvolume":"        90","status":"public","date_created":"2021-08-06T09:04:39Z","author":[{"full_name":"Christ, Andreas","first_name":"Andreas","last_name":"Christ"},{"first_name":"Cosmo","last_name":"Lupo","full_name":"Lupo, Cosmo"},{"last_name":"Reichelt","first_name":"Matthias","id":"138","full_name":"Reichelt, Matthias"},{"first_name":"Torsten","last_name":"Meier","full_name":"Meier, Torsten","orcid":"0000-0001-8864-2072","id":"344"},{"id":"26263","full_name":"Silberhorn, Christine","last_name":"Silberhorn","first_name":"Christine"}],"publication_identifier":{"issn":["1050-2947","1094-1622"]},"abstract":[{"lang":"eng","text":"Parametric down-conversion (PDC) forms one of the basic building blocks for quantum optical experiments. However, the intrinsic multimode spectral-temporal structure of pulsed PDC often poses a severe hindrance for the direct implementation of the heralding of pure single-photon states or, for example, continuous-variable entanglement distillation experiments. To get rid of multimode effects narrowband frequency filtering is frequently applied to achieve a single-mode behavior. A rigorous theoretical description to accurately describe the effects of filtering on PDC, however, is still missing. To date, the theoretical models of filtered PDC are rooted in the discrete-variable domain and only account for filtering in the low-gain regime, where only a few photon pairs are emitted at any single point in time. In this paper we extend these theoretical descriptions and put forward a simple model, which is able to accurately describe the effects of filtering on PDC in the continuous-variable domain. This developed straightforward theoretical framework enables us to accurately quantify the tradeoff between suppression of higher-order modes, reduced purity, and lowered Einstein–Podolsky–Rosen entanglement, when narrowband filters are applied to multimode type-II PDC."}]}