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Toward new era of quantum electrical measurements through phase slips

Deliverables

Report on optimal circuit for CQPS current standard

A report summarising results of simulations of the CQPS circuit will be uploaded to the project data repository. The report will show results of simulations. It will describe the optimized circuit and the optimised parameters of the circuit elements.

Report on the progress of hybrid device fabrication technology

A description about the realized thin film hybrid technology will be given. The reached device properties will be reported and the route towards integrated standards concretised.

Report on the progress of superconducting disordered silicides for CQPS applications

A report and relevant data will be uploaded to project data repository. The report will cover the work done towards implementing CQPS circuit elements from superconducting silicides.

Report on the progress of developing 2D superconductor technologies

We describe the progress on 2D superconducting materials during the project's first year and plan future actions.

Web site, logo and flyer

Design project logotype. Set up project webpage available for the public. Set up the project data repository for secure sharing of project specific documents and data within the consortium. And prepare a 1-page project flyer for the scientific community.

Data management plan (DMP)

Complete the project data management plan and make it available to all project partners.

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Publications

Enhancement of Superconductivity by Amorphizing Molybdenum Silicide Films Using a Focused Ion Beam

Author(s): Emma Mykkänen, Arijit Bera, Janne S. Lehtinen, Alberto Ronzani, Katja Kohopää, Teresa Hönigl-Decrinis, Rais Shaikhaidarov, Sebastian E. de Graaf, Joonas Govenius, Mika Prunnila
Published in: Nanomaterials, 10/5, 2020, Page(s) 950, ISSN 2079-4991
Publisher: MDPI
DOI: 10.3390/nano10050950

Superconducting ‘twin’ qubit

Author(s): I. V. Antonov, R. S. Shaikhaidarov, V. N. Antonov, O. V. Astafiev
Published in: Physical Review B, 102/11, 2020, Page(s) 115422, ISSN 2469-9950
Publisher: APS
DOI: 10.1103/physrevb.102.115422

Dual Fraunhofer interference and charge fluctuations in long quantum phase slip wires

Author(s): S. E. de Graaf
Published in: Physical Review B, 102/14, 2020, Page(s) 144509, ISSN 2469-9950
Publisher: APS
DOI: 10.1103/physrevb.102.144509

Kondo effect and spin-orbit coupling in graphene quantum dots.

Author(s): Annika Kurzmann; Yaakov Kleeorin; Chuyao Tong; Rebekka Garreis; Angelika Knothe; Marius Eich; Christopher Mittag; Carolin Gold; Folkert K. de Vries; Kenji Watanabe; Takashi Taniguchi; Vladimir I. Fal'ko; Yigal Meir; Thomas Ihn; Thomas Ihn; Klaus Ensslin; Klaus Ensslin
Published in: Nature Communications, 12, 2021, Page(s) 6004, ISSN 2041-1723
Publisher: Nature Publishing Group
DOI: 10.3929/ethz-b-000521794

Driving a low critical current Josephson junction array with a mode-locked laser

Author(s): J. Nissilä, T. Fordell, K. Kohopää, E. Mykkänen, P. Immonen, R. N. Jabdaraghi, E. Bardalen, O. Kieler, B. Karlsen, P. A. Øhlckers, R. Behr, A. J. Manninen, J. Govenius, and A. Kemppinen
Published in: Applied Physics Letters, 119, 2021, Page(s) 032601, ISSN 1077-3118
Publisher: American Physical Society
DOI: 10.1063/5.0060804

Superconducting phase transition in inhomogeneous chains of superconducting islands

Author(s): Eduard Ilin, Irina Burkova, Xiangyu Song, Michael Pak, Dmitri S. Golubev, Alexey Bezryadin
Published in: Physical Review B, 102/13, 2020, Page(s) 134502, ISSN 2469-9950
Publisher: APS
DOI: 10.1103/physrevb.102.134502

Fabry–Pérot cavities and quantum dot formation at gate-defined interfaces in twisted double bilayer graphene

Author(s): Elías Portolés; Giulia Zheng; Folkert K. de Vries; Jihang Zhu; Petar Tomić; Takashi Taniguchi; Kenji Watanabe; Allan H. MacDonald; Klaus Ensslin; Thomas Ihn; Peter Rickhaus
Published in: 2D Materials, 9, 2021, Page(s) 014003, ISSN 2053-1583
Publisher: IOP
DOI: 10.1088/2053-1583/ac33c2

Tailoring the Band Structure of Twisted Double Bilayer Graphene with Pressure.

Author(s): Bálint Szentpéteri; Peter Rickhaus; Folkert K. de Vries; Albin Márffy; Bálint Fülöp; Endre Tóvári; Kenji Watanabe; Takashi Taniguchi; Andor Kormányos; Szabolcs Csonka; Péter Makk
Published in: Nano Letters, 21, 2021, Page(s) 8777, ISSN 1530-6992
Publisher: American Chemical Society
DOI: 10.3929/ethz-b-000516208

Wafer-level uniformity of atomic-layer-deposited niobium nitride thin films for quantum devices

Author(s): Emanuel Knehr; Emanuel Knehr; Mario Ziegler; Sven Linzen; Konstantin Ilin; Patrick Schanz; Jonathan Plentz; Marco Diegel; Heidemarie Schmidt; Heidemarie Schmidt; Evgeni Il'ichev; Michael Siegel
Published in: Journal of vacuum science and technology A, 39, 2021, Page(s) 052401, ISSN 1520-8559
Publisher: American Institute of Physics
DOI: 10.1116/6.0001126

Scattering between Minivalleys in Twisted Double Bilayer Graphene

Author(s): Petar Tomić; Peter Rickhaus; Aitor Garcia-Ruiz; Giulia Zheng; Elías Portolés; Vladimir Fal’ko; Kenji Watanabe; Takashi Taniguchi; Klaus Ensslin; Thomas Ihn; Folkert K. de Vries
Published in: Physical Review Letters, 128, 2021, Page(s) 057702, ISSN 1079-7114
Publisher: American Physical Society
DOI: 10.1103/physrevlett.128.057702

Supercurrent and Phase Slips in a Ballistic Carbon Nanotube Bundle Embedded into a van der Waals Heterostructure

Author(s): Christian Bäuml; Lorenz Bauriedl; Magdalena Marganska; Milena Grifoni; Christoph Strunk; Nicola Paradiso
Published in: Nano Letters, 21, 2021, Page(s) 8627, ISSN 1530-6992
Publisher: American Chemical Society
DOI: 10.1021/acs.nanolett.1c02565

Gate-defined Josephson junctions in magic-angle twisted bilayer graphene

Author(s): Folkert K. de Vries; Elías Portolés; Giulia Zheng; Takashi Taniguchi; Kenji Watanabe; Thomas Ihn; Klaus Ensslin; Peter Rickhaus
Published in: Nature Nanotechnology, 16, 2021, Page(s) 760, ISSN 1748-3387
Publisher: Nature Publishing Group
DOI: 10.1038/s41565-021-00896-2