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Topological Polaritonics

Total Cost €


EC-Contrib. €






 ToPol project word cloud

Explore the words cloud of the ToPol project. It provides you a very rough idea of what is the project "ToPol" about.

reservoir    yielding    photonic    instabilities    photonics    waveguides    defects    light    splitting    time    local    switches    right    insulator    strongest    physics    frequencies    implementing    symmetry    appropriate    topological    powerful    polarizing    ratio    terminations    expertise    engineering    zeeman    due    group    topology    first    lasing    tackle    faces    exotic    reversal    half    nonlinearities    honeycomb    robustness    optical    diodes    cavity    interplay    fractional    exciton    detuning    perturbations    solitons    host    profit    multistability    magnetic    soliton    active    versatility    compact    fabrication    realize    pump    lattice    external    lasers    breaking    optically    isolators    either    etching    polaritons    give    disciplinary    modes    quasiparticle    broken    densities    microcavity    platforms    proven    nonlinear    polariton    effect    hall    photon    break    topologicale    trs    lattices    edge    moment    exploring    quantum    linewidth    interactions    unidirectional   

Project "ToPol" data sheet

The following table provides information about the project.


Organization address
address: RUE MICHEL ANGE 3
city: PARIS
postcode: 75794

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country France [FR]
 Total cost 185˙076 €
 EC max contribution 185˙076 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2017
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2018
 Duration (year-month-day) from 2018-04-01   to  2020-05-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

Due to their great versatility, photonic systems have been proven to be very powerful platforms for exploring topological physics and for engineering optical devices that are robust against fabrication defects and local perturbations. Right now, the most important challenges that faces this emerging field of topological photonics are (i) to break time-reversal symmetry (TRS) at optical frequencies, and (ii) to implement nonlinearities in topological modes. On the one hand, breaking TRS would allow implementing compact optical isolators and unidirectional waveguides in the edge states of topological lattices; on the other hand, nonlinearities would give rise to exotic effects emerging from the interplay of interactions and topology (e.g. fractional quantum Hall effect, topological solitons, multistability) and allow engineering active optical devices with topological robustness (e.g. topological lasers, diodes, switches...). Based on a multi-disciplinary approach, the objective of this proposal is to tackle both challenges using lattices of cavity polaritons, a half-light/half-exciton quasiparticle well-known for its nonlinear properties. In the first part of this project, we will take profit of the strong expertise of the host group in terms of microcavity etching to investigate nonlinear effects (polariton lasing, soliton formation and instabilities) emerging in the topological edge states of honeycomb polariton lattices. To do this, we will use a lattice with relevant edge terminations and appropriate exciton-photon detuning, and optically pump high polariton densities in the topologicale edge modes. Then, we will demonstrate TRS-breaking, either by using the magnetic moment of polaritons in an external magnetic field or by optically polarizing the exciton reservoir. Finally, using the approach yielding the strongest Zeeman splitting / polariton linewidth ratio, we will realize the first topological insulator with broken TRS at optical frequencies.

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The information about "TOPOL" are provided by the European Opendata Portal: CORDIS opendata.

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