Ruelle M, Frigerio E, Baudin E, Berroir J-M, Plaçais B, Grémaud B, Jonckheere T, Martin T, Rech J, Cavanna A, Gennser U, Jin Y, Ménard G, Fève G
Laboratoire de Physique de l'Ecole normale supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université Paris Cité, Paris, France.
Aix Marseille Univ, Université de Toulon, CNRS, CPT, Marseille, France.
Science. 2025 Jul 3;389(6755):eadm7695. doi: 10.1126/science.adm7695.
Anyons are quasiparticles that keep a robust memory of particle exchanges via a braiding phase factor. When an anyon excitation is emitted toward a quantum point contact (QPC) in a fractional quantum Hall (FQH) fluid, this memory translates into tunneling events that may occur long after the anyon excitation has exited the QPC. In this work, we used triggered anyon pulses incident on a QPC in a filling factor ν = 1/3 FQH fluid to investigate anyon tunneling in the time domain. We observed that braiding increases the tunneling timescale, which is set by the temperature and the anyon scaling dimension that characterizes the edge-state dynamics. Our experiment introduces time-domain measurements for characterizing the braiding phase and scaling dimension of anyons.
任意子是一种准粒子，它通过编织相位因子对粒子交换保持强大的记忆。当一个任意子激发朝着分数量子霍尔（FQH）流体中的量子点接触（QPC）发射时，这种记忆会转化为隧穿事件，这些隧穿事件可能在任意子激发离开QPC很久之后才发生。在这项工作中，我们使用触发的任意子脉冲入射到填充因子ν = 1/3的FQH流体中的QPC上，以研究时域中的任意子隧穿。我们观察到编织增加了隧穿时间尺度，该时间尺度由温度和表征边缘态动力学的任意子标度维数设定。我们的实验引入了时域测量来表征任意子的编织相位和标度维数。
