| Title: |
Chiral emission induced by optical Zeeman effect in polariton micropillars |
| Authors: |
Real, B., Zambon, N. Carlon, St-Jean, P., Sagnes, I., Lemaître, A., Gratiet, L. Le, Harouri, A., Ravets, S., Bloch, J., Amo, A. |
| Publication Year: |
2021 |
| Collection: |
Condensed Matter
Physics (Other) |
| Subject Terms: |
Condensed Matter - Mesoscale and Nanoscale Physics, Physics - Optics |
| More Details: |
The low sensitivity of photons to external magnetic fields is one of the major challenges for the engineering of photonic lattices with broken time-reversal symmetry. Here we show that time-reversal symmetry can be broken for microcavity polaritons in the absence of any external magnetic field thanks to polarization dependent polariton interactions. Circularly polarized excitation of carriers in a micropillar induces a Zeeman-like energy splitting between polaritons of opposite polarizations. In combination with optical spin-orbit coupling inherent to semiconductor microstructures, the interaction induced Zeeman splitting results in emission of vortical beams with a well-defined chirality. Our experimental findings can be extended to lattices of coupled micropillars opening the possibility of controling optically the topological properties of polariton Chern insulators. |
| Document Type: |
Working Paper |
| DOI: |
10.1103/PhysRevResearch.3.043161 |
| Access URL: |
http://arxiv.org/abs/2107.11131 |
| Accession Number: |
edsarx.2107.11131 |
| Database: |
arXiv |
