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

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Article number097401
<mark>Journal publication date</mark>2/03/2018
<mark>Journal</mark>Physical review letters
Issue number9
Volume120
Number of pages6
Publication StatusPublished
<mark>Original language</mark>English

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 and Px,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 Letter 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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© 2018 American Physical Society