Magneto-optical induced supermode switching in quantum fluids of light

Magdalena Furman, Rafal Mirek, Mateusz Król, Wojciech Pacuski, Helgi Sigurosson, Jacek Szczytko, Barbara Pietka*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


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.
Original languageEnglish
Article number196
JournalCommunications Physics
Issue number1
Publication statusPublished - Dec 2023

Bibliographical note

Publisher Copyright:
© 2023, The Author(s).

Other keywords

  • liquid crystals
  • polaritons
  • microcavity
  • bose einstein condensates


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