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ISOTOP

Interactions, Spins and Edges in Optical Lattices with Topological Band Structures

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Project "ISOTOP" data sheet

The following table provides information about the project.

Coordinator
UNIVERSITAET HAMBURG 

Organization address
address: MITTELWEG 177
city: HAMBURG
postcode: 20148
website: n.a.

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
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 Coordinator Country Germany [DE]
 Project website http://photon.physnet.uni-hamburg.de/ilp/sengstock/research/bose-fermi-mixtures/
 Total cost 159˙460 €
 EC max contribution 159˙460 € (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 2016
 Duration (year-month-day) from 2016-05-01   to  2018-07-29

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITAET HAMBURG DE (HAMBURG) coordinator 159˙460.00

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 Project objective

Electrons in a magnetic field experience a drift transverse to their velocity, which gives rise to intriguing effects such as the whole family of Hall Effects. Interestingly, this drift can also appear without a charged particle and without magnetic field, i.e. for ultra-cold quantum gases in optical lattices with non-trivial topology, described by a Berry curvature. This enables researchers to use the tunability of quantum gases and allow for studies beyond the possibilities of condensed matter systems. Furthermore, it allows to mimic and study in great detail fascinating effects such as topological insulators and edge-states. Especially, the interplay between topology and interactions is not well understood and the existence of many interesting states, such as topological insulators, fractional Chern insulators and topological superfluids, is predicted, but have not yet been observed. In recent years, great progress has been made in engineering topological band structures for quantum gases. Whereas theoretical proposals are well developed, so far there are only few experimental realizations of topological band structures, especially for fermionic quantum gases. In this action, we want to create non-trivial topological band structures and explore (many-body) phases that can emerge for fermions and mixtures of bosons and fermions. We will map out the Berry curvature and study the detection of edge states, which provides a clear signature of a non-trivial topology. For the first time, we will realize a new creation and detection method for topological band structures and study high spin Fermi systems in topological optical lattices.

 Publications

year authors and title journal last update
List of publications.
2017 Matthias Tarnowski, Marlon Nuske, Nick Fläschner, Benno Rem, Dominik Vogel, Lukas Freystatzky, Klaus Sengstock, Ludwig Mathey, Christof Weitenberg
Observation of Topological Bloch-State Defects and Their Merging Transition
published pages: 240403, ISSN: 0031-9007, DOI: 10.1103/physrevlett.118.240403
Physical Review Letters 118/24 2019-06-07
2018 Nick Fläschner, Matthias Tarnowski, Benno S. Rem, Dominik Vogel, Klaus Sengstock, Christof Weitenberg
High-precision multiband spectroscopy of ultracold fermions in a nonseparable optical lattice
published pages: , ISSN: 2469-9926, DOI: 10.1103/physreva.97.051601
Physical Review A 97/5 2019-06-07
2018 N. Fläschner, D. Vogel, M. Tarnowski, B. S. Rem, D.-S. Lühmann, M. Heyl, J. C. Budich, L. Mathey, K. Sengstock, C. Weitenberg
Observation of dynamical vortices after quenches in a system with topology
published pages: 265-268, ISSN: 1745-2473, DOI: 10.1038/s41567-017-0013-8
Nature Physics 14/3 2019-06-07
2016 N. Flaschner, B. S. Rem, M. Tarnowski, D. Vogel, D.- S. Luhmann, K. Sengstock, C. Weitenberg
Experimental reconstruction of the Berry curvature in a Floquet Bloch band
published pages: 1091-1094, ISSN: 0036-8075, DOI: 10.1126/science.aad4568
Science 352/6289 2019-06-07

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