Nanosystems: Phys. Chem. Math., 2023, 14 (3), 328–333
Oscillating vorticity in single ring exciton polariton condensates
Vladimir A. Lukoshkin – Ioffe Institute, Russian Academy of Sciences, St. Petersburg; Spin Optics Laboratory, St. Petersburg State University, St. Petersburg, Russia; v.lukosh@mail.ioffe.ru
Irina E. Sedova – Stoletov Vladimir State University, Vladimir, Russia; iemedvedeva@vlsu.ru
Vladimir K. Kalevich – Ioffe Institute, Russian Academy of Sciences, St. Petersburg; Spin Optics Laboratory, St. Petersburg State University, St. Petersburg, Russia; kalevich.solid@mail.ioffe.ru
Evgeny S. Sedov – Spin Optics Laboratory, St. Petersburg State University, St. Petersburg, Russia; evgeny_sedov@mail.ru
Zacharias Hatzopoulos – FORTH-IESL, Heraklion, Crete, Greece; chatzop@physics.uoc.gr
Pavlos G. Savvidis – FORTH-IESL, Heraklion, Crete, Greece; Key Laboratory for Quantum Materials of Zhejiang Province, School of Science, Westlake University, Hangzhou, Zhejiang, China; Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou, Zhejiang Province, China; Department of Materials Science and Technology, University of Crete, Heraklion, Crete, Greece; p.savvidis@westlake.edu.cn
Alexey V. Kavokin – Spin Optics Laboratory, St. Petersburg State University, St. Petersburg, Russia; Key Laboratory for Quantum Materials of Zhejiang Province, School of Science, Westlake University, Hangzhou, Zhejiang, China; Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou, Zhejiang Province, China; Moscow Institute of Physics and Technology, Dolgoprudnyi, Moscow Region, Russia; a.kavokin@westlake.edu.cn
Corresponding author: Evgeny S. Sedov, evgeny sedov@mail.ru
DOI 10.17586/2220-8054-2023-14-3-328-333
PACS 71.36.+c, 03.75.Lm
ABSTRACT We study annular flows of exciton polaritons in exciton polariton condensates emerging in cylindrical optical micropillar cavities under the spatially localised non-resonant laser pumping. Annular flows indicate nonzero vorticity of the polariton condensate associated with the appearance of polariton vortices around the center of the micropillar. We report an experimental observation of single ring shaped condensates in the regime of vorticity oscillating in time. We reproduce the vorticity oscillations numerically and reveal possible control parameters for manipulating by the oscillation period.
KEYWORDS polariton, exciton-polariton condensate, persistent current, micropillar, vortex.
ACKNOWLEDGEMENTS Work was supported by the Saint Petersburg State University (Grant No. 94030557). Numerical simulations of evolution of the ring-shaped polariton condensate in the regime of oscillating vorticity were supported by the Russian Science Foundation (Grant No. 19-72-20039). Work of V.L., V.K., and A.K. was partially supported by the RFBR (Grant No. 19-52-12032). I.S. acknowledges state assignment in the field of scientific activity of the Ministry of Science and Higher Education of the Russian Federation (theme FZUN-2020-0013, state assignment of VlSU). A.K. acknowledges the support of Westlake University, Project 041020100118 and Program 2018R01002 funded by the Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang Province of China. Authors acknowledge Prof. Y. G. Rubo for fruitful discussions.
FOR CITATION Lukoshkin V.A., Sedova I.E., Kalevich V.K., Sedov E.S., Hatzopoulos Z., Savvidis P.G., Kavokin A.V. Oscillating vorticity in single ring exciton polariton condensates. Nanosystems: Phys. Chem. Math., 2023, 14 (3), 328–333.
[In Russian] Владимир А. Лукошкин, Ирина Е. Седова, Владимир К. Калевич, Евгений С. Седов, Захариас Хацопулос, Павлос Г. Саввидис, Алексей В. Кавокин
Осциллирующая завихренность в однокольцевых экситон-поляритонных конденсатах
АННОТАЦИЯ Исследованы кольцевые токи экситонных поляритонов в экситон-поляритонных конденсатах, формирующихся в цилиндрических оптических резонаторах в форме микропилларов при пространственно-локализованной нерезонансной лазерной накачке. Кольцевые токи указывают на ненулевую завихрённость поляритонного конденсата, связанную с возникновением поляритонных вихрей вокруг центра микропиллара. Выполнено экспериментальное наблюдение конденсатов в форме одиночного кольца в режиме осциллирующей во времени завихрённости. Численно воспроизведены колебания завихрённости, и выявлены возможные управляющие параметры для манипулирования периодом колебаний.
КЛЮЧЕВЫЕ СЛОВА поляритон, экситон-поляритонный конденсат, незатухающий ток, микропиллар, вихрь .
