Fusion and parity readout of Majorana bound states in lateral S-TI-S Josephson junctions

ORAL

Abstract

We propose experiments designed to demonstrate the fusion of Majorana bound states (MBS) and to measure their parity 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, 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 fusion and braiding operations. 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 grants DMR-1610114 and DMR-1745304.

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Presenters

  • Jessica Montone

    • Department of Physics and Astronomy, University of Pittsburgh
    • Physics, University of Illinois Urbana-Champaign
    • University of Illinois at Urbana-Champaign

Authors

  • Jessica Montone

    • Department of Physics and Astronomy, University of Pittsburgh
    • Physics, University of Illinois Urbana-Champaign
    • University of Illinois at Urbana-Champaign

  • Guang Yue

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

  • Gilbert Arias

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

  • Xiong Yao

    • 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

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

  • Seongshik Oh

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

  • Dale J Van Harlingen

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