Theory of Quantum Materials and Solid State Quantum Technologies

Theory of Quantum Materials and Solid State Quantum Technologies

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    • Ramón Aguado
    • Leni Bascones
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    • Luis Brey
    • María José Calderón
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    • Elsa Prada
    • Pablo San-Jose
    • Rui Silva
    • Giorgos Giavaras
    • Olga Arroyo
    • Fernando Peñaranda
    • Carlos Payá
    • Eduardo B. Molinero
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Fully tunable coherence and control of acceptor qubits in Si, arXiv:1706.08858

Image 5 July, 2017 icmmadmin
g-anisotropy

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Previous PostStrong correlations and the search for high-Tc superconductivity in chromium pnictides and chalcogenides. arXiv:1610.09560Next PostMajorana non-locality in hybrid nanowires, arXiv:1712.03536

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  1.  

    Majoranas are theoretical particles of great interest, as they are anticipated to show different exotic properties, including their applications in quantum computing. However, the jury is still out on whether these particles have been detected experimentally or not. In our collaborationwith scientists at the Institute of Science and Technology Austria (ISTA) and the Catalan Institute of Nanoscience and Nanotechnology (ICN2), we have discovered Majorana imposters by applying two measurement techniques, which will help to reduce interpretation uncertainties in the future search for these elusive particles. Our findings, based on new theoretical and experimental investigations, are published in Nature

     

    New publication in Nature “Majorana-like Coulomb spectroscopy in the absence of zero-bias peaks “

    17 January, 2023 ramon

  2. Most experimental claims of Majorana bound states rest on the observation of a persistent zero bias peak (ZBP) in tunneling spectra.  In our paper, we provide comprehensive evidence that the ZBPs observed in the experiments with semiconductor nanowires fully coated with a superconducting shell are not of Majorana origin. Instead, our theory  demonstrates that ZBPs can be explained in terms of Yu-Shiba-Rusinov states (a special type of Andreev bound state) that originate in the tunneling region owing to the competition between electron correlations and superconductivity.

    New publication in Science “Nontopological zero-bias peaks in full-shell nanowires induced by flux-tunable Andreev states”

    5 July, 2021 ramon

  3. In this review, we discuss the main properties of Andreev  and Majorana bound states, state-of-the-art techniques for their detection and theoretical progress beyond minimal models, including different types of robust zero modes that may emerge without a band-topological transition.

    Nature Review Physics “From Andreev to Majorana bound states in hybrid superconductor-semiconductor nanowires”

    21 December, 2020 ramon
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Instituto de Ciencia de Materiales de Madrid, CSIC

  • Ramón Aguado
  • Leni Bascones
    • CV
    • Publications
    • Courses
    • Talks
  • Luis Brey
  • María José Calderón
    • Publications
  • Elsa Prada
  • Pablo San-Jose
  • Rui Silva
  • Giorgos Giavaras
  • Olga Arroyo
  • Fernando Peñaranda
  • Carlos Payá
  • Eduardo B. Molinero
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