Topological states with Spin-Dependent potentials for ultracold lithium

Projektinformationen

TopSpiD

ID Finanzhilfevereinbarung: 746150

DOI 10.3030/746150

Das Projekt endete am 31 Dezember 2019

EK-Unterschriftsdatum 7 April 2017

Startdatum 1 Juli 2018

Enddatum 30 Juni 2020

Finanziert unter

• EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions

Gesamtkosten € 175 419,60

EU-Beitrag € 175 419,60

Koordiniert durch

EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICH
Switzerland

Ziel

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.

Wissenschaftliches Gebiet

• natural sciences › physical sciences › theoretical physics › particle physics › fermions
• natural sciences › chemical sciences › inorganic chemistry › alkali metals
• engineering and technology › electrical engineering, electronic engineering, information engineering › electronic engineering › computer hardware › quantum computers
• natural sciences › physical sciences › electromagnetism and electronics › superconductivity

Schlüsselbegriffe

• Degenerate Fermi gases
• Topological excitations
• Atomtronics
• Quantum transport
• Majorana Fermions

Programm/Programme

• H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions Main Programme
• H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility

Thema/Themen

• MSCA-IF-2016 - Individual Fellowships

Aufforderung zur Vorschlagseinreichung

H2020-MSCA-IF-2016

Finanzierungsplan

MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)

Koordinator

EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICH

• Netto-EU-Beitrag: € 175 419,60
• Adresse: Raemistrasse 101 ; 8092 Zuerich ; Schweiz
• Region: Schweiz/Suisse/Svizzera › Zürich › Zürich
• Aktivitätstyp: Higher or Secondary Education Establishments
• Gesamtkosten: € 175 419,60