In-vacuo growth and fabrication of superconductor-semiconductor hybrid heterostructures for topological quantum computation

ORAL

Abstract

Superconductor-semiconductor heterostructures are the backbone of Majorana Zero Mode (MZM) based topological quantum computing. Magneto-transport in nanowires of InSb with partial shells of aluminum has highlighted the significance of abrupt and epitaxial, in-vacuo growth of superconductors on semiconductors. Going forward, two key challenges need to be addressed. Firstly, the demonstration of in-vacuo, selective area growth of superconductors on wafer-scale semiconductors and, secondly, in-vacuo fabrication of proposed topological qubit devices. This work reports on the Molecular Beam Epitaxy (MBE) of selective area hybrid heterostructures using various approaches with the aim of creating a versatile platform for fabrication of topological qubits in vacuo.

*This work was in part funded by Microsoft Research Station Q at Santa Barbara and NSF-PIRE.

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Presenters

  • Mihir Pendharkar

    • Dept. of Electrical Engineering, Univ. of California, Santa Barbara, CA, USA
    • IEE, UC Santa Barbara
    • University of California Santa Barbara
    • Univ of California, Santa Barbara
    • Electrical and Computer Engineering, University of California Santa Barbara
    • Electrical & Computer Engineering, University of California, Santa Barbara
    • University of California, Santa Barbara

Authors

  • Mihir Pendharkar

    • Dept. of Electrical Engineering, Univ. of California, Santa Barbara, CA, USA
    • IEE, UC Santa Barbara
    • University of California Santa Barbara
    • Univ of California, Santa Barbara
    • Electrical and Computer Engineering, University of California Santa Barbara
    • Electrical & Computer Engineering, University of California, Santa Barbara
    • University of California, Santa Barbara

  • Joon Sue Lee

    • California Nano-Systems Institute, Univ. of California, Santa Barbara, CA, USA
    • University of Tennessee Knoxville
    • Univ of California, Santa Barbara
    • Physics & Astronomy, Seoul National University
    • University of California Santa Barbara
    • California Nanosystems Institute, University of California Santa Barbara
    • University of California, Santa Barbara

  • Anthony P McFadden

    • UCSB
    • Dept. of Electrical Engineering, Univ. of California, Santa Barbara, CA, USA
    • University of California, Santa Barbara
    • Univ of California, Santa Barbara

  • Sasa Gazibegovic

    • Dept. of Physics, Technical University, Eindhoven, The Netherlands
    • Eindhoven University of Technology
    • Department of Applied Physics, Eindhoven University of Technology
    • Applied Physics, Eindhoven Univ. of Technology
    • TU Eindhoven

  • Roy Op het Veld

    • Dept. of Physics, Technical University, Eindhoven, The Netherlands
    • Eindhoven University of Technology
    • Applied Physics, Eindhoven Univ. of Technology
    • TU Eindhoven
    • Department of Applied Physics, Eindhoven University of Technology

  • connor dempsey

    • Dept. of Electrical Engineering, Univ. of California, Santa Barbara, CA, USA
    • IEE, UC Santa Barbara
    • University of California Santa Barbara

  • Sean Harrington

    • Materials Department, University of California, Santa Barbara
    • Dept. of Materials Engineering, Univ. of California, Santa Barbara, CA, USA
    • IEE, UC Santa Barbara
    • Univ of California, Santa Barbara
    • University of California, Santa Barbara

  • Aranya Goswami

    • Dept. of Electrical Engineering, Univ. of California, Santa Barbara, CA, USA
    • Electrical and Computer Engineering Department, University of California, Santa Barbara
    • University of California Santa Barbara

  • Michael A Seas

    • Dept. of Materials Engineering, Univ. of California, Santa Barbara, CA, USA

  • Sukgeun Choi

    • Dept. of Electrical Engineering, Univ. of California, Santa Barbara, CA, USA
    • Univ. of California, Santa Barbara
    • Electrical and Computer Engineering Department, University of California, Santa Barbara
    • University of California Santa Barbara

  • Ghada Badawy

    • Dept. of Physics, Technical University, Eindhoven, The Netherlands
    • Eindhoven University of Technology
    • Department of Applied Physics, Eindhoven University of Technology
    • Applied Physics, Eindhoven Univ. of Technology
    • TU Eindhoven

  • Jason Jung

    • Dept. of Physics, Technical University, Eindhoven, The Netherlands
    • Applied Physics, Eindhoven Univ. of Technology
    • Department of Applied Physics, Eindhoven University of Technology

  • Moira Hocevar

    • Institute Neel, CNRS, Grenoble, France
    • Institute Neel, CEA Grenoble
    • Neel Institute, CNRS

  • Leo P Kouwenhoven

    • Dept. of Physics, Technical University, Delft, The Netherlands
    • Microsoft Quantum Lab Delft
    • Microsoft Quantum Lab Delft, Delft University of Technology
    • Microsoft Corp Delft
    • Quantum Lab Delft, Microsoft
    • Delft University of Technology
    • QuTech and Kavli Institute of Nanoscience, Delft University of Technology
    • Microsoft Corp

  • Roman Lutchyn

    • Microsoft Quantum, Santa Barbara, CA, USA
    • Microsoft Corp
    • University of California, Santa Barbara
    • Microsoft Quantum, Microsoft Station Q, University of California Santa Barbara, Santa Barbara, CA 93106, USA
    • Station Q, Microsoft Research, Santa Barbara, California 93106-6105, USA

  • Michael H Freedman

    • Microsoft Quantum, Santa Barbara, CA, USA

  • Sergey M Frolov

    • Dept. of Physics, Univ. of Pittsburgh, Pittsburgh, PA, USA
    • Univ of Pittsburgh
    • University of Pittsburgh
    • Physics, Univ. of Pittsburgh

  • Erik Bakkers

    • Dept. of Physics, Technical University, Eindhoven, The Netherlands
    • Eindhoven University of Technology
    • Department of Applied Physics, Eindhoven University of Technology
    • Applied Physics, Eindhoven Univ. of Technology
    • TU Eindhoven
    • Applied Physics, Eindhoven University of Technology

  • Chris J Palmstrom

    • Materials Department, University of California, Santa Barbara
    • UCSB
    • Departments of Electrical and Computer Engineering and Materials, University of California, Santa Barbara
    • Dept. of Electrical Engineering, Univ. of California, Santa Barbara, CA, USA
    • Univ. of California, Santa Barbara
    • Electrical and Computer Engineering Department, University of California, Santa Barbara
    • University of California, Santa Barbara
    • IEE, UC Santa Barbara
    • University of California Santa Barbara
    • Univ of California, Santa Barbara
    • Electrical and Computer Engineering, University of California Santa Barbara
    • Materials and Electrical & Comp. Eng, University of California, Santa Barbara