[{"publication_identifier":{"issn":["2041-1723"]},"publication_status":"published","issue":"1","year":"2015","intvolume":"         6","citation":{"ama":"Elgabarty H, Khaliullin RZ, Kühne TD. Covalency of hydrogen bonds in liquid water can be probed by proton nuclear magnetic resonance experiments. <i>Nature Communications</i>. 2015;6(1). doi:<a href=\"https://doi.org/10.1038/ncomms9318\">10.1038/ncomms9318</a>","chicago":"Elgabarty, Hossam, Rustam Z. Khaliullin, and Thomas D. Kühne. “Covalency of Hydrogen Bonds in Liquid Water Can Be Probed by Proton Nuclear Magnetic Resonance Experiments.” <i>Nature Communications</i> 6, no. 1 (2015). <a href=\"https://doi.org/10.1038/ncomms9318\">https://doi.org/10.1038/ncomms9318</a>.","ieee":"H. Elgabarty, R. Z. Khaliullin, and T. D. Kühne, “Covalency of hydrogen bonds in liquid water can be probed by proton nuclear magnetic resonance experiments,” <i>Nature Communications</i>, vol. 6, no. 1, Art. no. 8318, 2015, doi: <a href=\"https://doi.org/10.1038/ncomms9318\">10.1038/ncomms9318</a>.","bibtex":"@article{Elgabarty_Khaliullin_Kühne_2015, title={Covalency of hydrogen bonds in liquid water can be probed by proton nuclear magnetic resonance experiments}, volume={6}, DOI={<a href=\"https://doi.org/10.1038/ncomms9318\">10.1038/ncomms9318</a>}, number={18318}, journal={Nature Communications}, publisher={Springer Science and Business Media LLC}, author={Elgabarty, Hossam and Khaliullin, Rustam Z. and Kühne, Thomas D.}, year={2015} }","mla":"Elgabarty, Hossam, et al. “Covalency of Hydrogen Bonds in Liquid Water Can Be Probed by Proton Nuclear Magnetic Resonance Experiments.” <i>Nature Communications</i>, vol. 6, no. 1, 8318, Springer Science and Business Media LLC, 2015, doi:<a href=\"https://doi.org/10.1038/ncomms9318\">10.1038/ncomms9318</a>.","short":"H. Elgabarty, R.Z. Khaliullin, T.D. Kühne, Nature Communications 6 (2015).","apa":"Elgabarty, H., Khaliullin, R. Z., &#38; Kühne, T. D. (2015). Covalency of hydrogen bonds in liquid water can be probed by proton nuclear magnetic resonance experiments. <i>Nature Communications</i>, <i>6</i>(1), Article 8318. <a href=\"https://doi.org/10.1038/ncomms9318\">https://doi.org/10.1038/ncomms9318</a>"},"publisher":"Springer Science and Business Media LLC","date_updated":"2023-06-26T07:56:31Z","volume":6,"date_created":"2022-12-09T12:16:04Z","author":[{"id":"60250","full_name":"Elgabarty, Hossam","orcid":"0000-0002-4945-1481","last_name":"Elgabarty","first_name":"Hossam"},{"first_name":"Rustam Z.","full_name":"Khaliullin, Rustam Z.","last_name":"Khaliullin"},{"first_name":"Thomas D.","last_name":"Kühne","full_name":"Kühne, Thomas D.","id":"49079"}],"title":"Covalency of hydrogen bonds in liquid water can be probed by proton nuclear magnetic resonance experiments","doi":"10.1038/ncomms9318","publication":"Nature Communications","type":"journal_article","status":"public","_id":"34310","department":[{"_id":"304"}],"user_id":"14931","keyword":["General Physics and Astronomy","General Biochemistry","Genetics and Molecular Biology","General Chemistry"],"article_number":"8318","language":[{"iso":"eng"}]},{"language":[{"iso":"eng"}],"keyword":["General Physics and Astronomy","General Biochemistry","Genetics and Molecular Biology","General Chemistry","Multidisciplinary"],"article_number":"7707","department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"35"},{"_id":"230"}],"user_id":"16199","_id":"40394","status":"public","abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title><jats:p>Walk-off effects, originating from the difference between the group and phase velocities, limit the efficiency of nonlinear optical interactions. While transverse walk-off can be eliminated by proper medium engineering, longitudinal walk-off is harder to avoid. In particular, ultrafast twin-beam generation via pulsed parametric down-conversion and four-wave mixing is only possible in short crystals or fibres. Here we show that in high-gain parametric down-conversion, one can overcome the destructive role of both effects and even turn them into useful tools for shaping the emission. In our experiment, one of the twin beams is emitted along the pump Poynting vector or its group velocity matches that of the pump. The result is markedly enhanced generation of both twin beams, with the simultaneous narrowing of angular and frequency spectrum. The effect will enable efficient generation of ultrafast twin photons and beams in cavities, waveguides and whispering-gallery mode resonators.</jats:p>"}],"publication":"Nature Communications","type":"journal_article","doi":"10.1038/ncomms8707","title":"Giant narrowband twin-beam generation along the pump-energy propagation direction","volume":6,"author":[{"first_name":"Angela M.","last_name":"Pérez","full_name":"Pérez, Angela M."},{"last_name":"Spasibko","full_name":"Spasibko, Kirill Yu","first_name":"Kirill Yu"},{"full_name":"Sharapova, Polina","id":"60286","last_name":"Sharapova","first_name":"Polina"},{"last_name":"Tikhonova","full_name":"Tikhonova, Olga V.","first_name":"Olga V."},{"first_name":"Gerd","last_name":"Leuchs","full_name":"Leuchs, Gerd"},{"last_name":"Chekhova","full_name":"Chekhova, Maria V.","first_name":"Maria V."}],"date_created":"2023-01-26T14:27:03Z","date_updated":"2025-12-16T11:14:51Z","publisher":"Springer Science and Business Media LLC","intvolume":"         6","citation":{"ama":"Pérez AM, Spasibko KY, Sharapova P, Tikhonova OV, Leuchs G, Chekhova MV. Giant narrowband twin-beam generation along the pump-energy propagation direction. <i>Nature Communications</i>. 2015;6(1). doi:<a href=\"https://doi.org/10.1038/ncomms8707\">10.1038/ncomms8707</a>","ieee":"A. M. Pérez, K. Y. Spasibko, P. Sharapova, O. V. Tikhonova, G. Leuchs, and M. V. Chekhova, “Giant narrowband twin-beam generation along the pump-energy propagation direction,” <i>Nature Communications</i>, vol. 6, no. 1, Art. no. 7707, 2015, doi: <a href=\"https://doi.org/10.1038/ncomms8707\">10.1038/ncomms8707</a>.","chicago":"Pérez, Angela M., Kirill Yu Spasibko, Polina Sharapova, Olga V. Tikhonova, Gerd Leuchs, and Maria V. Chekhova. “Giant Narrowband Twin-Beam Generation along the Pump-Energy Propagation Direction.” <i>Nature Communications</i> 6, no. 1 (2015). <a href=\"https://doi.org/10.1038/ncomms8707\">https://doi.org/10.1038/ncomms8707</a>.","apa":"Pérez, A. M., Spasibko, K. Y., Sharapova, P., Tikhonova, O. V., Leuchs, G., &#38; Chekhova, M. V. (2015). Giant narrowband twin-beam generation along the pump-energy propagation direction. <i>Nature Communications</i>, <i>6</i>(1), Article 7707. <a href=\"https://doi.org/10.1038/ncomms8707\">https://doi.org/10.1038/ncomms8707</a>","short":"A.M. Pérez, K.Y. Spasibko, P. Sharapova, O.V. Tikhonova, G. Leuchs, M.V. Chekhova, Nature Communications 6 (2015).","bibtex":"@article{Pérez_Spasibko_Sharapova_Tikhonova_Leuchs_Chekhova_2015, title={Giant narrowband twin-beam generation along the pump-energy propagation direction}, volume={6}, DOI={<a href=\"https://doi.org/10.1038/ncomms8707\">10.1038/ncomms8707</a>}, number={17707}, journal={Nature Communications}, publisher={Springer Science and Business Media LLC}, author={Pérez, Angela M. and Spasibko, Kirill Yu and Sharapova, Polina and Tikhonova, Olga V. and Leuchs, Gerd and Chekhova, Maria V.}, year={2015} }","mla":"Pérez, Angela M., et al. “Giant Narrowband Twin-Beam Generation along the Pump-Energy Propagation Direction.” <i>Nature Communications</i>, vol. 6, no. 1, 7707, Springer Science and Business Media LLC, 2015, doi:<a href=\"https://doi.org/10.1038/ncomms8707\">10.1038/ncomms8707</a>."},"year":"2015","issue":"1","publication_identifier":{"issn":["2041-1723"]},"publication_status":"published"},{"year":"2013","issue":"1","title":"A versatile source of single photons for quantum information processing","date_created":"2023-01-26T07:42:36Z","publisher":"Springer Science and Business Media LLC","publication":"Nature Communications","language":[{"iso":"eng"}],"keyword":["General Physics and Astronomy","General Biochemistry","Genetics and Molecular Biology","General Chemistry","Multidisciplinary"],"citation":{"ama":"Förtsch M, Fürst JU, Wittmann C, et al. A versatile source of single photons for quantum information processing. <i>Nature Communications</i>. 2013;4(1). doi:<a href=\"https://doi.org/10.1038/ncomms2838\">10.1038/ncomms2838</a>","chicago":"Förtsch, Michael, Josef U. Fürst, Christoffer Wittmann, Dmitry Strekalov, Andrea Aiello, Maria V. Chekhova, Christine Silberhorn, Gerd Leuchs, and Christoph Marquardt. “A Versatile Source of Single Photons for Quantum Information Processing.” <i>Nature Communications</i> 4, no. 1 (2013). <a href=\"https://doi.org/10.1038/ncomms2838\">https://doi.org/10.1038/ncomms2838</a>.","ieee":"M. Förtsch <i>et al.</i>, “A versatile source of single photons for quantum information processing,” <i>Nature Communications</i>, vol. 4, no. 1, Art. no. 1818, 2013, doi: <a href=\"https://doi.org/10.1038/ncomms2838\">10.1038/ncomms2838</a>.","apa":"Förtsch, M., Fürst, J. U., Wittmann, C., Strekalov, D., Aiello, A., Chekhova, M. V., Silberhorn, C., Leuchs, G., &#38; Marquardt, C. (2013). A versatile source of single photons for quantum information processing. <i>Nature Communications</i>, <i>4</i>(1), Article 1818. <a href=\"https://doi.org/10.1038/ncomms2838\">https://doi.org/10.1038/ncomms2838</a>","mla":"Förtsch, Michael, et al. “A Versatile Source of Single Photons for Quantum Information Processing.” <i>Nature Communications</i>, vol. 4, no. 1, 1818, Springer Science and Business Media LLC, 2013, doi:<a href=\"https://doi.org/10.1038/ncomms2838\">10.1038/ncomms2838</a>.","bibtex":"@article{Förtsch_Fürst_Wittmann_Strekalov_Aiello_Chekhova_Silberhorn_Leuchs_Marquardt_2013, title={A versatile source of single photons for quantum information processing}, volume={4}, DOI={<a href=\"https://doi.org/10.1038/ncomms2838\">10.1038/ncomms2838</a>}, number={11818}, journal={Nature Communications}, publisher={Springer Science and Business Media LLC}, author={Förtsch, Michael and Fürst, Josef U. and Wittmann, Christoffer and Strekalov, Dmitry and Aiello, Andrea and Chekhova, Maria V. and Silberhorn, Christine and Leuchs, Gerd and Marquardt, Christoph}, year={2013} }","short":"M. Förtsch, J.U. Fürst, C. Wittmann, D. Strekalov, A. Aiello, M.V. Chekhova, C. Silberhorn, G. Leuchs, C. Marquardt, Nature Communications 4 (2013)."},"intvolume":"         4","publication_status":"published","publication_identifier":{"issn":["2041-1723"]},"doi":"10.1038/ncomms2838","author":[{"first_name":"Michael","last_name":"Förtsch","full_name":"Förtsch, Michael"},{"first_name":"Josef U.","full_name":"Fürst, Josef U.","last_name":"Fürst"},{"first_name":"Christoffer","last_name":"Wittmann","full_name":"Wittmann, Christoffer"},{"full_name":"Strekalov, Dmitry","last_name":"Strekalov","first_name":"Dmitry"},{"last_name":"Aiello","full_name":"Aiello, Andrea","first_name":"Andrea"},{"last_name":"Chekhova","full_name":"Chekhova, Maria V.","first_name":"Maria V."},{"first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263"},{"first_name":"Gerd","last_name":"Leuchs","full_name":"Leuchs, Gerd"},{"last_name":"Marquardt","full_name":"Marquardt, Christoph","first_name":"Christoph"}],"volume":4,"date_updated":"2023-01-30T12:44:31Z","status":"public","type":"journal_article","article_number":"1818","user_id":"26263","department":[{"_id":"288"},{"_id":"15"}],"_id":"40163"},{"publication_identifier":{"issn":["0026-8976","1362-3028"]},"publication_status":"published","page":"671-695","intvolume":"        69","citation":{"bibtex":"@article{Gochin_Pines_Rosen_Rucker_Schmidt_1990, title={Two-dimensional N.M.R. studies of flexible molecules in liquid crystals: orientational order and conformational probabilities of<i>n</i>-hexane}, volume={69}, DOI={<a href=\"https://doi.org/10.1080/00268979000100501\">10.1080/00268979000100501</a>}, number={4}, journal={Molecular Physics}, publisher={Informa UK Limited}, author={Gochin, M. and Pines, A. and Rosen, M.E. and Rucker, S.P. and Schmidt, Claudia}, year={1990}, pages={671–695} }","short":"M. Gochin, A. Pines, M.E. Rosen, S.P. Rucker, C. Schmidt, Molecular Physics 69 (1990) 671–695.","mla":"Gochin, M., et al. “Two-Dimensional N.M.R. Studies of Flexible Molecules in Liquid Crystals: Orientational Order and Conformational Probabilities of<i>n</i>-Hexane.” <i>Molecular Physics</i>, vol. 69, no. 4, Informa UK Limited, 1990, pp. 671–95, doi:<a href=\"https://doi.org/10.1080/00268979000100501\">10.1080/00268979000100501</a>.","apa":"Gochin, M., Pines, A., Rosen, M. E., Rucker, S. P., &#38; Schmidt, C. (1990). Two-dimensional N.M.R. studies of flexible molecules in liquid crystals: orientational order and conformational probabilities of<i>n</i>-hexane. <i>Molecular Physics</i>, <i>69</i>(4), 671–695. <a href=\"https://doi.org/10.1080/00268979000100501\">https://doi.org/10.1080/00268979000100501</a>","ieee":"M. Gochin, A. Pines, M. E. Rosen, S. P. Rucker, and C. Schmidt, “Two-dimensional N.M.R. studies of flexible molecules in liquid crystals: orientational order and conformational probabilities of<i>n</i>-hexane,” <i>Molecular Physics</i>, vol. 69, no. 4, pp. 671–695, 1990, doi: <a href=\"https://doi.org/10.1080/00268979000100501\">10.1080/00268979000100501</a>.","chicago":"Gochin, M., A. Pines, M.E. Rosen, S.P. Rucker, and Claudia Schmidt. “Two-Dimensional N.M.R. Studies of Flexible Molecules in Liquid Crystals: Orientational Order and Conformational Probabilities of<i>n</i>-Hexane.” <i>Molecular Physics</i> 69, no. 4 (1990): 671–95. <a href=\"https://doi.org/10.1080/00268979000100501\">https://doi.org/10.1080/00268979000100501</a>.","ama":"Gochin M, Pines A, Rosen ME, Rucker SP, Schmidt C. Two-dimensional N.M.R. studies of flexible molecules in liquid crystals: orientational order and conformational probabilities of<i>n</i>-hexane. <i>Molecular Physics</i>. 1990;69(4):671-695. doi:<a href=\"https://doi.org/10.1080/00268979000100501\">10.1080/00268979000100501</a>"},"volume":69,"author":[{"full_name":"Gochin, M.","last_name":"Gochin","first_name":"M."},{"first_name":"A.","last_name":"Pines","full_name":"Pines, A."},{"last_name":"Rosen","full_name":"Rosen, M.E.","first_name":"M.E."},{"last_name":"Rucker","full_name":"Rucker, S.P.","first_name":"S.P."},{"first_name":"Claudia","orcid":"0000-0003-3179-9997","last_name":"Schmidt","id":"466","full_name":"Schmidt, Claudia"}],"date_updated":"2023-01-07T10:50:09Z","doi":"10.1080/00268979000100501","type":"journal_article","status":"public","department":[{"_id":"2"},{"_id":"315"}],"user_id":"466","_id":"35390","extern":"1","article_type":"original","issue":"4","quality_controlled":"1","year":"1990","date_created":"2023-01-06T13:24:20Z","publisher":"Informa UK Limited","title":"Two-dimensional N.M.R. studies of flexible molecules in liquid crystals: orientational order and conformational probabilities of<i>n</i>-hexane","publication":"Molecular Physics","language":[{"iso":"eng"}],"keyword":["Physical and Theoretical Chemistry","Condensed Matter Physics","Molecular Biology","Biophysics"]}]