Roadmap on nanoscale superconductivity for quantum technologies
Review article, 2026
In 2025, the Year of Quantum Science and Technology (https://quantum2025.org/), we celebrate a century of quantum mechanics, witnessing a surge in activities that illuminate its inherent strangeness and drive technological innovation. Superconductivity, discovered 114 years ago, stands as a prime example, offering direct and compelling evidence of macroscopic quantum phenomena. Beyond its ability to conduct immense currents without loss, superconductivity reveals the quantum realm operating on a scale we can directly observe and manipulate. The macroscopic quantum coherence, where an ensemble of particles is described by a single wave function, leads to remarkable consequences: dissipation-less current and flux quantization-the basic properties exploited in superconducting quantum circuit fabrication. This Roadmap has been inspired by intensive discussions and collaborations emerging from the European Cooperation in Science & Technology COST-Action CA21144 (SuperQuMap-Superconducting Nanodevices and Quantum Materials for Coherent Manipulation). The aim of the COST Action SuperQuMap is to establish a strong European network centered on macroscopic quantum behavior in superconductors, bringing together groups of different backgrounds and more than 30 countries. The roadmap outlines the network's concrete activities, driving advancements in superconductor-based quantum technologies and charting future directions. Spanning fundamental research to practical applications, the roadmap incorporates insights from industry partners developing quantum computation. It begins by exploring quantum materials, highlighting how topology and electronic correlations could catalyze a quantum leap in technology. We then delve into manipulating the superconducting phase, leveraging advancements in magnetism, 3D fabrication, and tunable correlations. Further, we showcase the advanced microscopy techniques-such as angle-resolved photoemission spectroscopy and scanning probes-used to visualize quantum behavior. Finally, and crucially, we detail the quantum devices developed within the network, and their transformative impact on modern quantum computing approaches.
quantum materials
magnetic flux quanta
quantum technologies
topological superconductivity
superconductor-ferromagnet hybrids
local probe techniques
Josephson devices
Author
Oleksandr Dobrovolskiy
FLUXONICS European Foundry Superconducting Elect e
Technische Universität Braunschweig
Hermann Suderow
Universidad Autonoma de Madrid (UAM)
Francesco Tafuri
University of Naples Federico II
Annica M. Black-Schaffer
Uppsala University
Jose L. Lado
Aalto University
Asle Sudbo
Norwegian University of Science and Technology (NTNU)
Daniela Stornaioulo
University of Naples Federico II
National Research Council of Italy (CNR)
Chuan Li
University of Twente
Anna E. Bohmer
Ruhr-Universität Bochum
Lan Maria Tran
Polish Academy of Sciences
Andrzej J. Zaleski
Polish Academy of Sciences
Adrian Crisan
National Institute of Materials Physics
Massimiliano Polichetti
University of Salerno
Armando Galluzzi
University of Salerno
Ali Gencer
Ankara Univ
Bernd Aichner
University of Vienna
Neven Barisic
Vienna University of Technology
University of Zagreb
Wolfgang Lang
University of Vienna
Tomas Samuely
Pavol Jozef Safarik University
Martin Gmitra
Slovak Academy of Sciences
Tristan Cren
Sorbonne University
Mateo Calandra
Sorbonne University
Peter Samuely
Slovak Academy of Sciences
Jeroen Custers
Charles University
Rosa Cordoba
Universitat de Valencia
Vladimir M. Fomin
Technical State University of the Republic of Moldova
Leibniz IFW Dresden
Nicola Poccia
Leibniz IFW Dresden
University of Naples Federico II
Pavol Szabo
Slovak Academy of Sciences
Fabrizio Porrati
Goethe University Frankfurt
Gleb Kakazei
University of Porto
Jan Aarts
Leiden University
Jason Robinson
University of Cambridge
Javier E. Villegas
University Paris-Saclay
Matthias Althammer
Bavarian Academy of Sciences and Humanities
Technical University of Munich
Hans Huebl
Munich Ctr Quantum Sci & Technol MCQST
Technical University of Munich
Bavarian Academy of Sciences and Humanities
Akashdeep Kamra
RPTU Kaiserslautern-Landau
Mathias Weiler
RPTU Kaiserslautern-Landau
J. Hugo Dil
Paul Scherrer Institut
Swiss Federal Institute of Technology in Lausanne (EPFL)
Daniil Evtushinsky
Swiss Federal Institute of Technology in Lausanne (EPFL)
Beena Kalisky
Bar-Ilan University
Yonathan Anahory
The Hebrew University Of Jerusalem
Simon Bending
University of Bath
Peter Liljeroth
Aalto University
Abdou Hassanien
Jozef Stefan Institute
Isabel Guillamon
Universidad Autonoma de Madrid (UAM)
Edwin Herrera
Universidad Autonoma de Madrid (UAM)
Silhanek
University of Liège
Joris Van de Vondel
KU Leuven
Anna Palau
Spanish National Research Council (CSIC)
Ilya Charaev
University of Zürich
Maria Sidorova
Humboldt University of Berlin
German Aerospace Center (DLR)
Floriana Lombardi
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Thilo Bauch
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Cheryl Feuillet-Palma
Sorbonne University
Vasily Stolyarov
Sorbonne University
Dimitri Roditchev
Sorbonne University
Vladimir M. Krasnov
Stockholm University
Benedikt Hampel
Technische Universität Braunschweig
Maria Jose Martinez-Perez
University of Zaragoza
Javier Sese
University of Zaragoza
Dieter Koelle
University of Tübingen
Stefano Poletto
Rigetti Comp, 775 Heinz Ave
Alessandro Bruno
QuantWare B.V.
Davide Massarotti
University of Naples Federico II
Superconductor Science and Technology
0953-2048 (ISSN) 1361-6668 (eISSN)
Vol. 39 2 023502Subject Categories (SSIF 2025)
Condensed Matter Physics
DOI
10.1088/1361-6668/ae3030