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Topological superfluidity

Topological superfluidity in ultracold gas of Dysprosium atoms

Total Cost €

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EC-Contrib. €

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Partnership

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Project "Topological superfluidity" data sheet

The following table provides information about the project.

Coordinator
COLLEGE DE FRANCE 

Organization address
address: PLACE MARCELIN BERTHELOT 11
city: PARIS
postcode: 75005
website: www.college-de-france.fr

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]
 Project website http://www.lkb.upmc.fr/boseeinsteincondensates/359-2/ultracold-dysprosium/
 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-2014
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2015
 Duration (year-month-day) from 2015-05-01   to  2017-04-30

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    COLLEGE DE FRANCE FR (PARIS) coordinator 185˙076.00

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 Project objective

In the last decade experimental and theoretical studies in condensed matter demonstrated that materials with strong spin-orbit coupling can host a new state of matter for the electron gas - a topological insulator. More recently the concept of topological matter was generalized theoretically to superconducting systems with strong spin-orbit coupling. The topological character manifests itself in the presence of quantum states bound to edges or defects that exhibit exotic physical properties. In topological superconductors, edge states are described as Majorana fermions. These exotic particles - originally predicted in high-energy physics - are non-abelian anyons: their quantum statistics is neither bosonic nor fermionic. Observing Majorana fermions would be the first demonstration of such exotic particles. The field of ultracold atoms seems well suited for the realization of superfluid systems with strong spin-orbit coupling. As shown in recent experimental works, manipulating manipulating atomic internal states with lasers can mimick spin-orbit couplings of strong amplitude. We have constructed at College de france a new experimental setup producing ultracold Dysprosium atomic gases. This atomic species exhibits narrow electronic transitions that should allow one to create such a spin-orbit coupling without substantial heating, which is the main requisite for creating a superfluid state. Combining spin-orbit coupling and strong interactions should lead to the formation of a topological superfluid. We will investigate the structure of quasi-particle excitations of this superfluid, which should exhibit edge modes described as Majorana fermions.

 Publications

year authors and title journal last update
List of publications.
2017 Davide Dreon, Leonid A Sidorenkov, Chayma Bouazza, Wilfried Maineult, Jean Dalibard, Sylvain Nascimbene
Optical cooling and trapping of highly magnetic atoms: the benefits of a spontaneous spin polarization
published pages: 65005, ISSN: 0953-4075, DOI: 10.1088/1361-6455/aa5db5
Journal of Physics B: Atomic, Molecular and Optical Physics 50/6 2019-07-24

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