Exciton-polaritons in a two-dimensional Lieb lattice with spin-orbit coupling
- Whittaker, C.E.
- Cancellieri, E.
- Walker, P.M.
- Gulevich, D.R.
- Schomerus, H.
- Vaitiekus, D.
- Royall, B.
- Whittaker, D.M.
- Clarke, E.
- Iorsh, I.V.
- Shelykh, I.A.
- Skolnick, M.S.
- Krizhanovskii, D.N.
DOIAbstract
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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