Probing the parity of Majorana bound states in lateral S-TI-S Josephson junctions via SET detectors and fusion operations

ORAL

Abstract

We propose experiments designed to probe the parity of Majorana bound states (MBS) in S-TI-S (Superconductor-Topological Insulator-Superconductor) lateral Josephson junctions. These junctions are expected to host MBS at Josephson vortex cores where the phase difference across the junction is an odd multiple of π. Our approach is to integrate Al-AlOx-Al single-electron transistors (SET), which are sensitive to the parity of the MBS pairs, with Nb-Bi2Se3-Nb Josephson junctions, in which the MBS can be created and manipulated to carry out braiding operations. We also present a modification to the experiment in which the MBS pairs are combined on an Au quantum dot to demonstrate fusion. We report progress toward implementing these schemes and incorporating them into circuits for quantum information processing.

*This work is supported by the National Science Foundation grant DMR20-04825.

–

Presenters

  • Jessica Montone

    • University of Illinois at Urbana-Champaign
    • Physics, University of Illinois Urbana-Champaign

Authors

  • Jessica Montone

    • University of Illinois at Urbana-Champaign
    • Physics, University of Illinois Urbana-Champaign

  • Guang Yue

    • University of Illinois at Urbana-Champaign
    • University of Illinois Urbana-Champaign
    • Physics, University of Illinois Urbana-Champaign
    • Department of Physics, University of Illinois at Urbana-Champaign

  • Gilbert Arias

    • University of Illinois at Urbana-Champaign
    • University of Illinois Urbana-Champaign
    • Physics, University of Illinois Urbana-Champaign

  • Xiong Yao

    • Rutgers, The State University of New Jersey
    • Rutgers University, New Brunswick
    • Department of Physics & Astronomy, Rutgers, The State University of New Jersey

  • Deepti Jain

    • Rutgers University, New Brunswick
    • Department of Physics & Astronomy, Rutgers, The State University of New Jersey

  • Jisoo Moon

    • Rutgers University, New Brunswick

  • Seongshik Oh

    • Rutgers University, New Brunswick
    • Department of Physics and Astronomy, Rutgers, The State University of New Jersey
    • Rutgers, The State University of New Jersey
    • Department of Physics & Astronomy, Rutgers, The State University of New Jersey

  • Dale J Van Harlingen

    • University of Illinois at Urbana-Champaign
    • University of Illinois Urbana-Champaign
    • Physics, University of Illinois Urbana-Champaign
    • Department of Physics, University of Illinois at Urbana-Champaign