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Integration of InAs-Al Heterostructures into Microwave Circuit

ORAL

Abstract

Semiconductor-based Josephson junctions provide a platform to study the proximity effect and for the realization of topological superconductivity. Recently our group has demonstrated the possibility of having highly transparent contact between a superconductor and a semiconductor by combining high mobility Indium Arsenide (InAs) surface two dimensional electron gases (2DEGs) with epitaxially grown aluminum (Al) [1]. This allows for gate-tunable superconducting Josephson Junctions and consequently gate-tunable Transmons [2]. Here we present the integration of these InAs-Al heterostructures into microwave circuits such as Gatemon Qubits. The steps needed to fabricate on III-V material platform while mitigating microwave losses and microwave response will be discussed.

[1] W. Mayer, Appl. Phys. Lett. 114, 103104 (2019)
[2] L. Casparis, Nature Nanotechnology, volume 13, pages 915–919 (2018)

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Presenters

  • Joseph Yuan

    New York University, Physics, New York University, New York Univ NYU, Center for Quantum Phenomena, New York University, Department of Physics, New York University

Authors

  • Joseph Yuan

    New York University, Physics, New York University, New York Univ NYU, Center for Quantum Phenomena, New York University, Department of Physics, New York University

  • Matthieu Dartiailh

    Department of Physics, New York University, Physics, New York University, New York University, Center for Quantum Phenomena, New York University, New York Univ NYU, Center for Quantum Phenomena, NYU

  • William Mayer

    Department of Physics, New York University, New York University, Physics, New York University, New York Univ NYU, Center for Quantum Phenomena, New York University

  • Noah Goss

    New York Univ NYU

  • Tri D Nguyen

    New York Univ NYU

  • Kaushini S Wickramasinghe

    New York University, Physics, New York University, University of Maryland, College Park, Center for Quantum Phenomena, New York University, New York Univ NYU, Department of Physics, New York University

  • Kasra Sardashti

    New York University, New York Univ NYU, Physics, New York University, Center for Quantum Phenomena, NYU

  • Javad Shabani

    Department of Physics, New York University, New York University, Physics, New York University, New York Univ NYU, Center for Quantum Phenomena, New York University, Center for Quantum Phenomena, NYU