A unified numerical approach to topological semiconductor-superconductor heterostructures

ORAL

Abstract

We develop a unified numerical approach for modeling semiconductor-superconductor heterostructures and apply it to topological Majorana nanowires. Our approach takes into account on equal footing important key ingredients: proximity-induced superconductivity, orbital and Zeeman effect of an applied magnetic field, spin-orbit coupling as well as the electrostatic environment. As a model system, we consider indium arsenide (InAs) nanowires with epitaxial aluminum (Al) shell and demonstrate qualitative agreement of the obtained results with the existing experimental data. Finally, we characterize the topological superconducting phase emerging in a finite magnetic field and calculate the corresponding topological phase diagram.

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Presenters

  • Georg W. Winkler

    Station Q, Microsoft

Authors

  • Georg W. Winkler

    Station Q, Microsoft

  • Andrey Antipov

    Station Q, Microsoft Research, Santa Barbara, California 93106-6105, USA, Station Q, Microsoft, Microsoft

  • Bernard Van Heck

    Microsoft, Microsoft Station Q, UCSB, Microsoft Station Q, Microsoft Quantum, Station Q, Microsoft Corp, Microsoft Station Q Santa Barbara, Station Q, Microsoft Research, Center for Quantum Devices and Microsoft Quantum Lab–Copenhagen, Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen, Denmark and Microsoft Quantum, Microsoft Sta, Station Q, Microsoft

  • Alexey A Soluyanov

    University of Zurich

  • Leonid Glazman

    Physics, Yale University, Departments of Physics and Applied Physics, Yale University, Yale University, Yale Univ

  • Michael Wimmer

    QuTech and Kavli institute of nanoscience, Delft University of Technology, Delft University of Technology

  • Roman Lutchyn

    Station Q, Microsoft Research, Santa Barbara, California 93106-6105, USA, Microsoft Station Q, Microsoft Quantum, Station Q, Microsoft Corp, Station Q, Microsoft, Microsoft