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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.

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

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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