Phys.org October 14, 2022
In optoelectronics 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. An international team of researchers (Poland, Iceland, Italy) has developed electrically tunable microcavity exciton-polariton resonances in a Rashba-Dresselhaus spin-orbit coupling field. They showed that different spin-orbit coupling fields and the reduced cavity symmetry led to tunable formation of the Berry curvature, the hallmark of quantum geometrical effects. They implemented an architecture of a photonic structure with a two-dimensional perovskite layer incorporated into a microcavity filled with nematic liquid crystal. Their work interfaces spinoptronic devices with electronics by combining electrical control over both the strong light-matter coupling conditions and artificial gauge fields…read more. Open Access TECHNICAL ARTICLEÂ
LC microcavity with 2D perovskite. Credit: SCIENCE ADVANCES, 5 Oct 2022, Vol 8, Issue 40Â