[{"intvolume":"         6","publication_status":"published","date_updated":"2025-12-16T11:14:51Z","author":[{"full_name":"Pérez, Angela M.","first_name":"Angela M.","last_name":"Pérez"},{"full_name":"Spasibko, Kirill Yu","first_name":"Kirill Yu","last_name":"Spasibko"},{"last_name":"Sharapova","first_name":"Polina","full_name":"Sharapova, Polina","id":"60286"},{"last_name":"Tikhonova","first_name":"Olga V.","full_name":"Tikhonova, Olga V."},{"last_name":"Leuchs","first_name":"Gerd","full_name":"Leuchs, Gerd"},{"last_name":"Chekhova","first_name":"Maria V.","full_name":"Chekhova, Maria V."}],"publication_identifier":{"issn":["2041-1723"]},"year":"2015","title":"Giant narrowband twin-beam generation along the pump-energy propagation direction","doi":"10.1038/ncomms8707","language":[{"iso":"eng"}],"article_number":"7707","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>"}],"issue":"1","publication":"Nature Communications","department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"35"},{"_id":"230"}],"type":"journal_article","keyword":["General Physics and Astronomy","General Biochemistry","Genetics and Molecular Biology","General Chemistry","Multidisciplinary"],"date_created":"2023-01-26T14:27:03Z","status":"public","volume":6,"user_id":"16199","_id":"40394","publisher":"Springer Science and Business Media LLC","citation":{"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} }","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>","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>.","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>.","short":"A.M. Pérez, K.Y. Spasibko, P. Sharapova, O.V. Tikhonova, G. Leuchs, M.V. Chekhova, Nature Communications 6 (2015).","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>.","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>"}},{"date_updated":"2023-01-30T12:44:31Z","publication_status":"published","intvolume":"         4","title":"A versatile source of single photons for quantum information processing","year":"2013","author":[{"full_name":"Förtsch, Michael","last_name":"Förtsch","first_name":"Michael"},{"full_name":"Fürst, Josef U.","last_name":"Fürst","first_name":"Josef U."},{"full_name":"Wittmann, Christoffer","last_name":"Wittmann","first_name":"Christoffer"},{"last_name":"Strekalov","first_name":"Dmitry","full_name":"Strekalov, Dmitry"},{"full_name":"Aiello, Andrea","last_name":"Aiello","first_name":"Andrea"},{"first_name":"Maria V.","last_name":"Chekhova","full_name":"Chekhova, Maria V."},{"id":"26263","full_name":"Silberhorn, Christine","first_name":"Christine","last_name":"Silberhorn"},{"last_name":"Leuchs","first_name":"Gerd","full_name":"Leuchs, Gerd"},{"last_name":"Marquardt","first_name":"Christoph","full_name":"Marquardt, Christoph"}],"publication_identifier":{"issn":["2041-1723"]},"doi":"10.1038/ncomms2838","article_number":"1818","language":[{"iso":"eng"}],"publication":"Nature Communications","issue":"1","type":"journal_article","keyword":["General Physics and Astronomy","General Biochemistry","Genetics and Molecular Biology","General Chemistry","Multidisciplinary"],"department":[{"_id":"288"},{"_id":"15"}],"date_created":"2023-01-26T07:42:36Z","status":"public","user_id":"26263","volume":4,"publisher":"Springer Science and Business Media LLC","_id":"40163","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>","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} }","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>.","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).","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>.","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>","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>."}},{"year":"2012","title":"A 2D Quantum Walk Simulation of Two-Particle Dynamics","publication_identifier":{"issn":["0036-8075","1095-9203"]},"author":[{"full_name":"Schreiber, Andreas","last_name":"Schreiber","first_name":"Andreas"},{"last_name":"Gábris","first_name":"Aurél","full_name":"Gábris, Aurél"},{"full_name":"Rohde, Peter P.","last_name":"Rohde","first_name":"Peter P."},{"full_name":"Laiho, Kaisa","first_name":"Kaisa","last_name":"Laiho"},{"full_name":"Štefaňák, Martin","first_name":"Martin","last_name":"Štefaňák"},{"first_name":"Václav","last_name":"Potoček","full_name":"Potoček, Václav"},{"full_name":"Hamilton, Craig","first_name":"Craig","last_name":"Hamilton"},{"full_name":"Jex, Igor","first_name":"Igor","last_name":"Jex"},{"id":"26263","full_name":"Silberhorn, Christine","first_name":"Christine","last_name":"Silberhorn"}],"date_updated":"2023-01-30T12:46:44Z","publication_status":"published","intvolume":"       336","language":[{"iso":"eng"}],"doi":"10.1126/science.1218448","issue":"6077","publication":"Science","abstract":[{"lang":"eng","text":"<jats:title>Here, There, Everywhere</jats:title>\r\n          <jats:p>\r\n            Random walks are a powerful mathematical method that can be used to simulate certain processes in biology, chemistry, or even the stock market. They present a statistical method for mapping the possible routes that processes can take. Quantum walks are expected to be able to probe multiple paths simultaneously. Quantum walks have been demonstrated for one-dimensional, or straight-line, walks. Now,\r\n            <jats:bold>\r\n              Schreiber\r\n              <jats:italic>et al.</jats:italic>\r\n            </jats:bold>\r\n            (p.\r\n            <jats:related-article xmlns:xlink=\"http://www.w3.org/1999/xlink\" ext-link-type=\"doi\" page=\"55\" related-article-type=\"in-this-issue\" vol=\"336\" xlink:href=\"10.1126/science.1218448\">55</jats:related-article>\r\n            , published online 8 March) demonstrate an optical system that can simulate quantum walks over a two-dimensional system, thereby providing the capability of describing much more complex processes.\r\n          </jats:p>"}],"date_created":"2023-01-26T07:59:09Z","type":"journal_article","keyword":["Multidisciplinary"],"department":[{"_id":"288"},{"_id":"15"}],"status":"public","page":"55-58","_id":"40173","publisher":"American Association for the Advancement of Science (AAAS)","user_id":"26263","volume":336,"citation":{"ama":"Schreiber A, Gábris A, Rohde PP, et al. A 2D Quantum Walk Simulation of Two-Particle Dynamics. <i>Science</i>. 2012;336(6077):55-58. doi:<a href=\"https://doi.org/10.1126/science.1218448\">10.1126/science.1218448</a>","bibtex":"@article{Schreiber_Gábris_Rohde_Laiho_Štefaňák_Potoček_Hamilton_Jex_Silberhorn_2012, title={A 2D Quantum Walk Simulation of Two-Particle Dynamics}, volume={336}, DOI={<a href=\"https://doi.org/10.1126/science.1218448\">10.1126/science.1218448</a>}, number={6077}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Schreiber, Andreas and Gábris, Aurél and Rohde, Peter P. and Laiho, Kaisa and Štefaňák, Martin and Potoček, Václav and Hamilton, Craig and Jex, Igor and Silberhorn, Christine}, year={2012}, pages={55–58} }","mla":"Schreiber, Andreas, et al. “A 2D Quantum Walk Simulation of Two-Particle Dynamics.” <i>Science</i>, vol. 336, no. 6077, American Association for the Advancement of Science (AAAS), 2012, pp. 55–58, doi:<a href=\"https://doi.org/10.1126/science.1218448\">10.1126/science.1218448</a>.","chicago":"Schreiber, Andreas, Aurél Gábris, Peter P. Rohde, Kaisa Laiho, Martin Štefaňák, Václav Potoček, Craig Hamilton, Igor Jex, and Christine Silberhorn. “A 2D Quantum Walk Simulation of Two-Particle Dynamics.” <i>Science</i> 336, no. 6077 (2012): 55–58. <a href=\"https://doi.org/10.1126/science.1218448\">https://doi.org/10.1126/science.1218448</a>.","short":"A. Schreiber, A. Gábris, P.P. Rohde, K. Laiho, M. Štefaňák, V. Potoček, C. Hamilton, I. Jex, C. Silberhorn, Science 336 (2012) 55–58.","apa":"Schreiber, A., Gábris, A., Rohde, P. P., Laiho, K., Štefaňák, M., Potoček, V., Hamilton, C., Jex, I., &#38; Silberhorn, C. (2012). A 2D Quantum Walk Simulation of Two-Particle Dynamics. <i>Science</i>, <i>336</i>(6077), 55–58. <a href=\"https://doi.org/10.1126/science.1218448\">https://doi.org/10.1126/science.1218448</a>","ieee":"A. Schreiber <i>et al.</i>, “A 2D Quantum Walk Simulation of Two-Particle Dynamics,” <i>Science</i>, vol. 336, no. 6077, pp. 55–58, 2012, doi: <a href=\"https://doi.org/10.1126/science.1218448\">10.1126/science.1218448</a>."}},{"doi":"10.1126/science.1128215","language":[{"iso":"eng"}],"intvolume":"       313","date_updated":"2023-11-17T09:16:01Z","publication_status":"published","publication_identifier":{"issn":["0036-8075","1095-9203"]},"author":[{"full_name":"Greilich, A.","last_name":"Greilich","first_name":"A."},{"full_name":"Yakovlev, D. R.","first_name":"D. R.","last_name":"Yakovlev"},{"last_name":"Shabaev","first_name":"A.","full_name":"Shabaev, A."},{"full_name":"Efros, Al. L.","first_name":"Al. L.","last_name":"Efros"},{"last_name":"Yugova","first_name":"I. A.","full_name":"Yugova, I. A."},{"last_name":"Oulton","first_name":"R.","full_name":"Oulton, R."},{"last_name":"Stavarache","first_name":"V.","full_name":"Stavarache, V."},{"id":"37763","full_name":"Reuter, Dirk","last_name":"Reuter","first_name":"Dirk"},{"full_name":"Wieck, A.","first_name":"A.","last_name":"Wieck"},{"first_name":"M.","last_name":"Bayer","full_name":"Bayer, M."}],"year":"2006","title":"Mode Locking of Electron Spin Coherences in Singly Charged Quantum Dots","department":[{"_id":"15"},{"_id":"230"}],"type":"journal_article","keyword":["Multidisciplinary"],"date_created":"2023-11-17T09:15:30Z","abstract":[{"lang":"eng","text":"<jats:p>The fast dephasing of electron spins in an ensemble of quantum dots is detrimental for applications in quantum information processing. We show here that dephasing can be overcome by using a periodic train of light pulses to synchronize the phases of the precessing spins, and we demonstrate this effect in an ensemble of singly charged (In,Ga)As/GaAs quantum dots. This mode locking leads to constructive interference of contributions to Faraday rotation and presents potential applications based on robust quantum coherence within an ensemble of dots.</jats:p>"}],"publication":"Science","issue":"5785","volume":313,"user_id":"42514","_id":"48999","publisher":"American Association for the Advancement of Science (AAAS)","page":"341-345","status":"public","citation":{"bibtex":"@article{Greilich_Yakovlev_Shabaev_Efros_Yugova_Oulton_Stavarache_Reuter_Wieck_Bayer_2006, title={Mode Locking of Electron Spin Coherences in Singly Charged Quantum Dots}, volume={313}, DOI={<a href=\"https://doi.org/10.1126/science.1128215\">10.1126/science.1128215</a>}, number={5785}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Greilich, A. and Yakovlev, D. R. and Shabaev, A. and Efros, Al. L. and Yugova, I. A. and Oulton, R. and Stavarache, V. and Reuter, Dirk and Wieck, A. and Bayer, M.}, year={2006}, pages={341–345} }","ama":"Greilich A, Yakovlev DR, Shabaev A, et al. Mode Locking of Electron Spin Coherences in Singly Charged Quantum Dots. <i>Science</i>. 2006;313(5785):341-345. doi:<a href=\"https://doi.org/10.1126/science.1128215\">10.1126/science.1128215</a>","mla":"Greilich, A., et al. “Mode Locking of Electron Spin Coherences in Singly Charged Quantum Dots.” <i>Science</i>, vol. 313, no. 5785, American Association for the Advancement of Science (AAAS), 2006, pp. 341–45, doi:<a href=\"https://doi.org/10.1126/science.1128215\">10.1126/science.1128215</a>.","chicago":"Greilich, A., D. R. Yakovlev, A. Shabaev, Al. L. Efros, I. A. Yugova, R. Oulton, V. Stavarache, Dirk Reuter, A. Wieck, and M. Bayer. “Mode Locking of Electron Spin Coherences in Singly Charged Quantum Dots.” <i>Science</i> 313, no. 5785 (2006): 341–45. <a href=\"https://doi.org/10.1126/science.1128215\">https://doi.org/10.1126/science.1128215</a>.","short":"A. Greilich, D.R. Yakovlev, A. Shabaev, Al.L. Efros, I.A. Yugova, R. Oulton, V. Stavarache, D. Reuter, A. Wieck, M. Bayer, Science 313 (2006) 341–345.","ieee":"A. Greilich <i>et al.</i>, “Mode Locking of Electron Spin Coherences in Singly Charged Quantum Dots,” <i>Science</i>, vol. 313, no. 5785, pp. 341–345, 2006, doi: <a href=\"https://doi.org/10.1126/science.1128215\">10.1126/science.1128215</a>.","apa":"Greilich, A., Yakovlev, D. R., Shabaev, A., Efros, Al. L., Yugova, I. A., Oulton, R., Stavarache, V., Reuter, D., Wieck, A., &#38; Bayer, M. (2006). Mode Locking of Electron Spin Coherences in Singly Charged Quantum Dots. <i>Science</i>, <i>313</i>(5785), 341–345. <a href=\"https://doi.org/10.1126/science.1128215\">https://doi.org/10.1126/science.1128215</a>"}}]