{"id":7257,"date":"2023-11-29T16:33:25","date_gmt":"2023-11-29T15:33:25","guid":{"rendered":"https:\/\/laser.usal.es\/faslight\/?page_id=7257"},"modified":"2023-12-29T11:00:47","modified_gmt":"2023-12-29T10:00:47","slug":"quantum-atom-optics-group-uab","status":"publish","type":"page","link":"https:\/\/laser.usal.es\/faslight\/en\/quantum-atom-optics-group-uab\/","title":{"rendered":"Quantum Atom Optics group (UAB)"},"content":{"rendered":"\t\t
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QAOS (Quantum Atom Optics)<\/a><\/strong> is, together with MIP (Metrology and image processing)<\/a><\/strong>, two of the research groups that are part of the Department of Physics of the Autonomous University of Barcelona<\/a><\/strong>.<\/p>\n

One of the research lines of QAOS group (theory) is focused on the control of light propagation in systems of coupled optical waveguides. They explore the capability of light with OAM to induce phases in some coupling amplitudes, which are equivalent to a net \u03c0 flux through the plaquettes and, give rise to a topologically non-trivial band structure, topologically protected states and Aharanov-Bohm caging. They also employ discrete Supersymmetry to design a partner system with a modified geometry but sharing the same spectrum of eigenvalues except one, that it is eliminated. This technique allows to perform high efficient topological pumping and topological state engineering.\u00a0\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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Edge state en un sistema topol\u00f3gico no herm\u00edtico simulado con un sistema discreto de anillos acoplados con ganancia y p\u00e9rdida (imagen cedida por Quantum Atom Optics group (QAOS))<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Main publications and results<\/span><\/span><\/h2>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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QUANTUM AND ATOM OPTICS GROUP (QAOS)<\/strong><\/p>\n

a) luz con OAM<\/p>\n

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  1. A. Turpin, G. Pelegri, J. Polo, J. Mompart y V. Ahufinger. Engineering of orbital angular momentum supermodes in coupled optical waveguides<\/em>. Scientific Reports 7<\/strong>, 44057 (2017).<\/li>\n
  2. C. J\u00f6rg, G. Queralt\u00f3, M. Kremer, G. Pelegr\u00ed, J. Schulz, A. Szameit, G. von Freymann, J. Mompart y V. Ahufinger. Artificial gauge field switching using orbital angular momentum modes in optical waveguides<\/em>. Light: Science & Applications 9<\/strong>, 150 (2020).<\/li>\n
  3. H. R. Hamedi, G. Zlabys, V. Ahufinger, Th. Halfmann, J. Mompart y G. Juzeliunas. Spatially strongly confined atomic excitation via two dimensional stimulated Raman adiabatic passage<\/em>. Optics Express 30<\/strong>, 13915-13930 (2022).<\/li>\n<\/ol>\n

    b) Generaci\u00f3n de estados topol\u00f3gicos con luz (sistemas discretos de gu\u00edas de onda y la estructura es del sistema global, no corresponde a la definici\u00f3n usual de luz estructurada)<\/p>\n

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    1. G. Queralt\u00f3, M. Kremer, L. J. Maczewsky, M. Heinrich, J. Mompart, V. Ahufinger y A. Szameit. Topological state engineering via supersymmetric transformations<\/em>. Communications Physics 3, 49 (2020).<\/li>\n
    2. D. Viedma, G. Queralt\u00f3, J. Mompart y V. Ahufinger. High Efficiency Topological Pumping with Discrete Supersymmetry Transformations<\/em>. Optics Express 30<\/strong>, 23531 (2022).<\/li>\n
    3. D. Viedma, J. Mompart y V. Ahufinger. Mode pumping in photonic lattices using a single tailored auxiliary waveguide<\/em>. Physical Review A 107, 023506 (2023).<\/li>\n
    4. David Viedma, Anselmo M. Marques, Ricardo G. Dias y Ver\u00f2nica Ahufinger. Topological n-root Su-Schrieffer-Heeger model in a non-Hermitian photonic ring system<\/em>. arXiv:2307.16855.<\/li>\n<\/ol>\n

      METROLOGY AND IMAGE PROCESSING GROUP<\/strong><\/p>\n

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      1. A. Turpin, Yu.V. Loiko, A. Peinado, A. Lizana, J. Campos, T. K. Kalkandjiev y J. Mompart. Polarization tailored novel vector beams based on conical refraction<\/em>, Opt. Exp. 23<\/strong>, 5704 (2015).<\/li>\n
      2. X. Zheng, A. Lizana, A. Peinado, C. Ram\u00edrez, J.L. Mart\u00ednez, A. M\u00e1rquez, I. Moreno and J. Campos. Compact LCOS-SLM based polarization pattern beam generator<\/em>, Journal of Lightwave Technology 33<\/strong>, 2047 (2015).<\/li>\n
      3. A. Turpin, A. Vargas, A. Lizana, F.A. Torres-Ruiz, I. Est\u00e9vez, I. Moreno, J. Campos y J. Mompart. Transformation of vector beams with radial and azimuthal polarizations in biaxial crystals<\/em>, JOSA A 32<\/strong>, 1012 (2015).<\/li>\n
      4. A. Lizana, A. Vargas, A. Turpin, C. Ramirez, I. Estevez y J. Campos, Shaping light with split lens configurations<\/em>, J. of Opt. 18<\/strong>, 105605, (2016).<\/li>\n
      5. A. Cofr\u00e9, A. Vargas, F.A. Torres-Ruiz, J. Campos, A. Lizana, M.M. S\u00e1nchez-L\u00f3pez y I. Moreno, Dual polarization split lenses<\/em>, Optics Exp. 25<\/strong>, 23773 (2017).<\/li>\n
      6. A. Lizana, H. Zhang, A. Turpin, A. Van Eeckhout, F. A. Torres-Ruiz, A. Vargas, C. Ramirez, F. Pi, y J. Campos, Generation of reconfigurable optical traps for microparticles spatial manipulation through dynamic split lens inspired light structures<\/em>, Scientific Reports 8<\/strong>, 11263 (2018).<\/li>\n
      7. G. L\u00f3pez-Morales, M.M. S\u00e1nchez-L\u00f3pez, A. Lizana, I. Moreno y J. Campos, Mueller Matrix Polarimetric Imaging Analysis of Optical Components for the Generation of Cylindrical Vector Beams<\/em>, Crystals 10<\/strong>, 1155, (2020).<\/li>\n
      8. D. Marco, G. L\u00f3pez-Morales, M.M. S\u00e1nchez-L\u00f3pez, A. Lizana, I. Moreno y J. Campos, Customized depolarization spatial patterns with dynamic retardance functions, Scientific Reports 11<\/strong>, 9415, (2021).<\/li>\n<\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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        Contact info<\/span><\/span><\/h2>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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        Representative of the node in the network:\u00a0<\/strong><\/p>\n

        Ver\u00f2nica Ahufinger (Veronica.Ahufinger@uab.cat)<\/p>\n

        Node webpage:<\/strong> https:\/\/webs.uab.cat\/qaos\/<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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