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arXiv · 1705.03006

Exciton Polaritons in a Two-Dimensional Lieb Lattice with Spin-Orbit Coupling

C. E. Whittaker·E. Cancellieri·P. M. Walker·D. R. Gulevich·H. Schomerus·D. Vaitiekus·B. Royall·D. M. Whittaker·E. Clarke·I. V. Iorsh·I. A. Shelykh·M. S. Skolnick·D. N. Krizhanovskii
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Abstract

We study exciton-polaritons in a two-dimensional Lieb lattice of micropillars. The energy spectrum of the system features two flat bands formed from $S$ and $P_{x,y}$ photonic orbitals, into which we trigger bosonic condensation under high power excitation. The symmetry of the orbital wave functions combined with photonic spin-orbit coupling gives rise to emission patterns with pseudospin texture in the flat band condensates. Our work shows the potential of polariton lattices for emulating flat band Hamiltonians with spin-orbit coupling, orbital degrees of freedom and interactions.

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C. E. Whittaker, E. Cancellieri, P. M. Walker, D. R. Gulevich, H. Schomerus, D. Vaitiekus, B. Royall, D. M. Whittaker, E. Clarke, I. V. Iorsh, I. A. Shelykh, M. S. Skolnick, D. N. Krizhanovskii. 2017-05-06. Exciton Polaritons in a Two-Dimensional Lieb Lattice with Spin-Orbit Coupling. https://doi.org/10.1103/physrevlett.120.097401

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