InterPol: Polariton lattices: a solid-state platform for quantum simulations of correlated and topological states

Lead Research Organisation: University of Sheffield
Department Name: Physics and Astronomy


The development of quantum simulation lacks compact on-chip scalable platforms. The recent
demonstrations of polariton lattices in semiconductor microcavities, in combination with their
extraordinary nonlinearities, place polaritons as one of the most promising candidates to achieve
this goal. The aim of this proposal is to implement polariton lattices in semiconductor
microcavities as a photonic-based solid-state platform for quantum simulations. The
polariton platform will allow for the engineering of the lattice geometry and site-to-site hoping, state
preparation and detection in individual sites, sensitivity to magnetic fields, and scalability due to the
low value of disorder. The driven-dissipative nature of the system opens the exciting possibility of
studying out-of-equilibrium strongly correlated phases, but it also calls for new theoretical
methods. We will combine the expertise in semiconductor physics and technology of four
experimental groups and the input of three theoretical groups to push polariton nonlinearities into
the strongly interacting regime. We plan on implementing the first polariton simulators by
studying quantum correlations and the topological phases in flat bans and in the presence
of artificial gauge field acting on polaritons in 1D and 2D lattice geometries, both
experimentally and theoretically. This project will provide the first quantum simulation platform
using scalable lattices at optical wavelengths.


10 25 50
Description Observed polarisation dependent topological edge states in SSH lattice.
Observed single photon phase shifts in microcavity polariton pillars
Exploitation Route Through interaction with companies working on quantum technologies
Sectors Digital/Communication/Information Technologies (including Software)

Title pump-probe experiments on observation of parametrically stimulated polariton blockade 
Description We synchronised to pulsed lasers at different frequencies in order to stimulated scattering of pump polaritons to the lower and higher energy states in a micropillar. 
Type Of Material Technology assay or reagent 
Year Produced 2019 
Provided To Others? No  
Impact No impact yet 
Description Quantera collaboration 
Organisation National Center for Scientific Research (Centre National de la Recherche Scientifique CNRS)
Department Laboratory for Photonics and Nanostructures
Country France 
Sector Public 
PI Contribution Measurements on SSH lattices and ongoing experiments on demonstration of quantum polaritons
Collaborator Contribution The group of J Bloch at CNRS, C2N provided high quality micropillar sample grown by MBE and processed using EBL and ICP etching.
Impact Still in progress
Start Year 2018