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arXiv · 2304.09159

Magneto-optical induced supermode switching in quantum fluids of light

Magdalena Furman·Rafał Mirek·Mateusz Król·Wojciech Pacuski·Helgi Sigurðsson·Jacek Szczytko·Barbara Piętka
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Abstract

The insensitivity of photons towards external magnetic fields forms one of the hardest barriers against efficient magneto-optical control, aiming at modulating the polarization state of light. However, there is even scarcer evidence of magneto-optical effects that can spatially modulate light. Here, we demonstrate the latter by exploiting strongly coupled states of semimagnetic matter and light in planar semiconductor microcavities. We nonresonantly excite two spatially adjacent exciton-polariton condensates which, through inherent ballistic near field coupling mechanism, spontaneously synchronise into a dissipative quantum fluidic supermode of definite parity. Applying a magnetic field along the optical axis, we continuously adjust the light-matter composition of the condensate exciton-polaritons, inducing a supermode switch into a higher order mode of opposite parity. Our findings set the ground towards magnetic spatial modulation of nonlinear light.

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Magdalena Furman, Rafał Mirek, Mateusz Król, Wojciech Pacuski, Helgi Sigurðsson, Jacek Szczytko, Barbara Piętka. 2023-04-18. Magneto-optical induced supermode switching in quantum fluids of light. https://doi.org/10.1038/s42005-023-01319-5

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