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Topological states with Spin-Dependent potentials for ultracold lithium

Total Cost €


EC-Contrib. €






 TopSpiD project word cloud

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

spin    platform    shine    near    effect    leads    decoherence    realize    hamiltonians    flow    magnetic    advantage    artificial    led    appear    successful    latter    accessible    atomtronic    computing    emission    understand    superfluid    combining    detection    search    atomic    phases    combination    abelian    light    sought    techniques    scheme    excitations    losses    invaluable    atoms    give    ultracold    perspectives    intriguing    normal    majorana    resonant    researcher    experimental    structures    action    potentials    beams    apparatus    transport    effort    model    metal    tolerant    expert    cooling    fault    bears    device    heating    superconductor    engineer    spontaneous    paving    coupling    contact    exchange    ideal    insensitivity    atom    easily    equivalent    region    create    topological    channel    orbit    kitaev    atomtronics    quantum    team    intermediate    boundary    statistics    interesting    small    limiting    fermions    observables    point    idea   

Project "TopSpiD" data sheet

The following table provides information about the project.


Organization address
address: Raemistrasse 101
postcode: 8092

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 Switzerland [CH]
 Total cost 175˙419 €
 EC max contribution 175˙419 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2016
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2018
 Duration (year-month-day) from 2018-07-01   to  2020-06-30


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

The recent understanding of the topological properties of matter has led to the search for the experimental production and control of topological excitations such as Majorana fermions. They appear at the boundary between a topological superconductor and a normal metal and have intriguing properties such as non-abelian exchange statistics and insensitivity to decoherence. Their production would give an invaluable insight on the properties of topological phases of matter as well as paving the way towards fault-tolerant quantum computing. The aim of this action is to create them in an ultracold atom set-up which is a ideal platform to engineer interesting Hamiltonians.

We propose to create such excitations by combining effective spin-orbit coupling with superfluid properties. We will use near-resonant light which has led to the successful implementation of artificial magnetic fields and spin-orbit coupling in ultracold atoms. We want to produce the latter coupling while limiting the associated heating due to spontaneous emission: the key idea is to shine the near-resonant beams on a very small region, where spontaneous emission leads to losses but not to heating.

We already have an apparatus able to realize the atomic equivalent of a quantum point contact. In this project, the experienced researcher, already expert in ultracold atom techniques, will lead the experimental team effort. As intermediate results, we will study the flow of atoms through “atomtronics” light structures, implement a cooling scheme using such an atomtronic device and understand the effect of increased losses in the channel on transport.

The combination of these new potentials with superfluid behaviour for ultracold atoms leads to the implementation of the Kitaev model that bears the highly sought Majorana excitations, and detection will take advantage of easily accessible transport observables. The atomtronics techniques developed would open wide perspectives for future studies.


year authors and title journal last update
List of publications.
2019 Laura Corman, Philipp Fabritius, Samuel Häusler, Jeffrey Mohan, Lena H. Dogra, Dominik Husmann, Martin Lebrat, Tilman Esslinger
Quantized conductance through a dissipative atomic point contact
published pages: , ISSN: 2469-9926, DOI: 10.1103/physreva.100.053605
Physical Review A 100/5 2020-01-27
2018 Dominik Husmann, Martin Lebrat, Samuel Häusler, Jean-Philippe Brantut, Laura Corman, Tilman Esslinger
Breakdown of the Wiedemann–Franz law in a unitary Fermi gas
published pages: 8563-8568, ISSN: 0027-8424, DOI: 10.1073/pnas.1803336115
Proceedings of the National Academy of Sciences 115/34 2020-01-27
2019 Martin Lebrat, Samuel Häusler, Philipp Fabritius, Dominik Husmann, Laura Corman, Tilman Esslinger
Quantized Conductance through a Spin-Selective Atomic Point Contact
published pages: , ISSN: 0031-9007, DOI: 10.1103/physrevlett.123.193605
Physical Review Letters 123/19 2020-01-27
2019 G. Salerno, H. M. Price, M. Lebrat, S. Häusler, T. Esslinger, L. Corman, J.-P. Brantut, N. Goldman
Quantized Hall Conductance of a Single Atomic Wire: A Proposal Based on Synthetic Dimensions
published pages: , ISSN: 2160-3308, DOI: 10.1103/physrevx.9.041001
Physical Review X 9/4 2020-01-27

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