Łempicka-Mirek, K., Król, M., Sigurdsson, H., Wincukiewicz, A., Morawiak, P., Mazur, R., Muszyński, M., Piecek, W., Kula, P., Stefaniuk, T., Kamińska, M., Marco, L. De, Lagoudakis, P. G., Ballarini, D., Sanvitto, D., Szczytko, J. and Piętka, B. (2022) Electrically tunable Berry curvature and strong light-matter coupling in birefringent perovskite microcavities at room temperature 11pp. (doi:10.48550/arXiv.2203.05289).
Abstract
The field of spinoptronics is underpinned by good control over photonic spin-orbit coupling in devices that possess strong optical nonlinearities. Such devices might hold the key to a new era of optoelectronics where momentum and polarization degrees-of-freedom of light are interwoven and interfaced with electronics. However, manipulating photons through electrical means is a daunting task given their charge neutrality and requires complex electro-optic modulation of their medium. In this work, we present electrically tunable microcavity exciton-polariton resonances in a Rashba-Dresselhaus spin-orbit coupling field at room temperature. We show that a combination of different spin orbit coupling fields and the reduced cavity symmetry leads to tunable formation of Berry curvature, the hallmark of quantum geometrical effects. For this, we have implemented a novel architecture of a hybrid photonic structure with a two-dimensional perovskite layer incorporated into a microcavity filled with nematic liquid crystal. Our work interfaces spinoptronic devices with electronics by combining electrical control over both the strong light-matter coupling conditions and artificial gauge fields.
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