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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.

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

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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