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HONEYPOL Report Summary

Project ID: 335585
Funded under: FP7-IDEAS-ERC
Country: France

Mid-Term Report Summary - HONEYPOL (Polariton networks: from honeycomb lattices to artificial gauge fields)

Polaritons in semiconductor microcavities have recently emerged as an extraordinary nonlinear photonic platform to emulate1D and 2D Hamiltonians, allowing the direct visualization of the wavefunctions in both real- and momentum-space as well as of the energy dispersion of eigenstates via photoluminescence experiments. In this project we use polaritons in coupled micropillars made out of a semiconductor microcavity to transpose to the photonic world some of the most fascinating properties of solid states systems, including superfluid-like effects and the physics of graphene.

The most important results of the project include the realization of a photonic Bose-Hubbard dimer (Rodriguez et al., Nat. Commun. 2016), the condensation of polaritons in a flat-band (Baboux et al. PRL 2016) and in a honeycomb lattice (Jacqmin et al., PRL 2014), the engineering of the spin-orbit coupling for photons in coupled micropillars (Sala et al., PRX 2015), and the observation of novel orbital edge states in a honeycomb lattice (Milicevic et al., in preparation).

The results obtained so far anticipate interesting perspectives in views of implementing artificial gauge fields in polariton lattices, studying the interplay between spin-orbit coupling and nonlinearities, or the experimental implementation of a photonic topological insulator as recently proposed (Nalitov et al., PRL 2015).

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