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Engineering Topological Phases and Excitations in Nanostructures with Interactions

Total Cost €


EC-Contrib. €






Project "ETOPEX" data sheet

The following table provides information about the project.


Organization address
address: PETERSPLATZ 1
city: BASEL
postcode: 4051

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 1˙158˙403 €
 EC max contribution 1˙158˙403 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-STG
 Funding Scheme ERC-STG
 Starting year 2018
 Duration (year-month-day) from 2018-01-01   to  2022-12-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITAT BASEL CH (BASEL) coordinator 1˙158˙403.00


 Project objective

The main goal of this theory project is to propose engineered topological phases emerging only in strongly interacting systems and to identify the most feasible systems for experimental implementation. First, we will focus on setups hosting topological states localized at domain walls in one-dimensional channels such as parafermions, which are a new class of non-Abelian anyons and most promising candidates for topological quantum computing schemes. Second, in the framework of weakly coupled wires and planes, we will develop schemes for novel fractional topological phases in two- and three-dimensional interacting systems. To achieve these two goals, my team will identify necessary ingredients such as strong electron-electron interactions, helical magnetic order, or crossed Andreev proximity-induced superconductivity and address each of them separately. Later, we combine them to lead us to the desired topological phases and states. On our way to the main goal, as test cases, we will also study non-interacting analogies of the proposed effects such as Majorana fermions and integer topological insulators and pay close attention to the rapid experimental progress to come up with the most feasible proposals. We will study transport properties, scanning tunneling and atomic force microscopy. Especially for systems driven out of equilibrium, we will develop a Floquet-Luttinger liquid technique. We will explore the stability of engineered topological phases, error rates of topological qubits based on them, and computation schemes allowing for a set of universal qubit gates. We will strive to find a reasonable balance between topological stability and experimental feasibility of setups. Our main theoretical tools are Luttinger liquid techniques (bosonization and renormalization group), Green functions, Floquet formalism, and numerical simulations in non-interacting test models.


year authors and title journal last update
List of publications.
2018 Pavel P. Aseev, Daniel Loss, Jelena Klinovaja
Conductance of fractional Luttinger liquids at finite temperatures
published pages: , ISSN: 2469-9950, DOI: 10.1103/PhysRevB.98.045416
Physical Review B 98/4 2019-08-29
2018 Manisha Thakurathi, Jelena Klinovaja, Daniel Loss
From fractional boundary charges to quantized Hall conductance
published pages: , ISSN: 2469-9950, DOI: 10.1103/PhysRevB.98.245404
Physical Review B 98/24 2019-08-29
2018 Marcel Serina, Daniel Loss, Jelena Klinovaja
Boundary spin polarization as a robust signature of a topological phase transition in Majorana nanowires
published pages: , ISSN: 2469-9950, DOI: 10.1103/PhysRevB.98.035419
Physical Review B 98/3 2019-08-29
2018 Chen-Hsuan Hsu, Peter Stano, Jelena Klinovaja, Daniel Loss
Majorana Kramers Pairs in Higher-Order Topological Insulators
published pages: , ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.121.196801
Physical Review Letters 121/19 2019-08-29
2018 Yanick Volpez, Daniel Loss, Jelena Klinovaja
Rashba sandwiches with topological superconducting phases
published pages: , ISSN: 2469-9950, DOI: 10.1103/PhysRevB.97.195421
Physical Review B 97/19 2019-08-29
2018 Christopher Reeg, Olesia Dmytruk, Denis Chevallier, Daniel Loss, Jelena Klinovaja
Zero-energy Andreev bound states from quantum dots in proximitized Rashba nanowires
published pages: , ISSN: 2469-9950, DOI: 10.1103/PhysRevB.98.245407
Physical Review B 98/24 2019-08-29
2019 Yanick Volpez, Daniel Loss, Jelena Klinovaja
Second-Order Topological Superconductivity in π -Junction Rashba Layers
published pages: , ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.122.126402
Physical Review Letters 122/12 2019-08-29
2019 Olesia Dmytruk, Manisha Thakurathi, Daniel Loss, Jelena Klinovaja
Majorana bound states in double nanowires with reduced Zeeman thresholds due to supercurrents
published pages: , ISSN: 2469-9950, DOI: 10.1103/PhysRevB.99.245416
Physical Review B 99/24 2019-08-29
2018 Olesia Dmytruk, Denis Chevallier, Daniel Loss, Jelena Klinovaja
Renormalization of the quantum dot g -factor in superconducting Rashba nanowires
published pages: , ISSN: 2469-9950, DOI: 10.1103/PhysRevB.98.165403
Physical Review B 98/16 2019-08-29

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