任意子是准粒子，通过编织相位因子保持粒子交换的自动记忆。当在分数量子霍尔（FQH）流体中向量子点接触（QPC）发射任意子激发时，这种记忆转化为隧道事件，可能在任意子激发退出量子点接触（QPC）很长一段时间后发生。
研究组在填充因子ν = 1/3 FQH流体中主题触发任意子脉冲入射到QPC上，以研究任意子在时域上的隧道效应。他们观察到编织增加了隧穿时间尺度，这是由温度和表征边缘状态动力学的任意尺度决定的。他们的实验引入了时域测量来表征任意子的编织相位和缩放维度。
附：英文原文
Title: Time-domain braiding of anyons
Author: M. Ruelle, E. Frigerio, E. Baudin, J.-M. Berroir, B. Plaais, B. Grémaud, T. Jonckheere, T. Martin, J. Rech, A. Cavanna, U. Gennser, Y. Jin, G. Ménard, G. Fève
Issue&Volume: 2025-07-03
Abstract: 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.
DOI: adm7695
Source: https://www.science.org/doi/10.1126/science.adm7695