Anyon braiding and telegraph noise in a graphene interferometer

IF 44.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2025-04-10 DOI:10.1126/science.adp5015

Thomas Werkmeister, James R. Ehrets, Marie E. Wesson, Danial H. Najafabadi, Kenji Watanabe, Takashi Taniguchi, Bertrand I. Halperin, Amir Yacoby, Philip Kim

引用次数: 0

Abstract

The search for anyons, quasiparticles with fractional charge and exotic exchange statistics, has inspired decades of condensed matter research. Quantum Hall interferometers enable direct observation of the anyon braiding phase via discrete interference phase jumps when the number of encircled localized quasiparticles changes. Here, we observe this braiding phase in both the ν = 1/3 and 4/3 fractional quantum Hall states by probing three-state random telegraph noise (RTN) in real-time. We find that the observed RTN stems from anyon quasiparticle number n fluctuations and reconstruct three Aharonov-Bohm oscillation signals phase shifted by 2π/3, corresponding to the three possible interference branches from braiding around n (mod 3) anyons. Our methods can be readily extended to interference of non-abelian anyons.

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石墨烯干涉仪中的任意子编织和电报噪声

寻找任意子、带分数电荷的准粒子和奇异交换统计数据，激发了数十年的凝聚态物质研究。量子霍尔干涉仪能够在局域准粒子数量变化时，通过离散干涉相位跳变直接观测任意子编织相位。本文通过实时探测三态随机电报噪声（RTN），观察了ν = 1/3和4/3分数阶量子霍尔态的编织相位。我们发现观测到的RTN源于任意子准粒子数n的波动，并重建了三个相移2π/3的Aharonov-Bohm振荡信号，对应于围绕n （mod 3）个任意子编织的三个可能的干涉分支。我们的方法可以很容易地推广到非阿贝尔任意子的干涉。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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