Direct observation of anyonic braiding statistics at theν=1/3 fractional quantum Hall state

ORAL  · Invited

Abstract

Anyons are exotic quasiparticles which exhibit fractional braiding statistics. We report experimental evidence for anyonic braiding statistics at the ν = 1/3 fractional quantum Hall state in a Fabry-Perot interferometer fabricated on a GaAs/AlGaAs heterostructure. The structure incorporates screening wells to suppress Coulomb charging effects, enabling the possibility of observing the anyonic phase without confounding by bulk-edge interaction. We observe Aharonov-Bohm interference with discrete jumps in phase consistent with anyonic phase θ = 2π/3.

*This work is supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under award number DE-SC0020138.

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Publication: Nakamura, J., Liang, S., Gardner, G.C. et al. Direct observation of anyonic braiding statistics. Nat. Phys. 16, 931–936 (2020). https://doi.org/10.1038/s41567-020-1019-1

Presenters

  • James R Nakamura

    • Purdue University

Authors

  • James R Nakamura

    • Purdue University

  • Shuang Liang

    • Purdue University

  • Geoff Gardner

    • Purdue University

  • Michael J Manfra

    • Department of Physics and Astronomy, Birck Nanotechnology Center, and Microsoft Quantum Lab Purdue, Purdue University
    • Purdue University
    • Purdue University, West Lafayette, Indiana 47907, USA