AI 中文总结
研究在孤立量子模拟平台实现类似量子点接触传输设置的挑战，提出从孤立晶格系统静态边缘电流提取散射特性，利用其对相位敏感性检测局部磁通量，还引入动力学方案，可扩展到探测任意子统计相位。
AI 中文摘要
量子点接触（QPC）是固态系统中传输实验的重要工具，可检测分数电荷和任意子编织统计。在孤立量子模拟平台（如超冷原子）中实现类似传输设置具有挑战性，通常需要耦合到外部库。本文表明，可从无库的孤立晶格系统的静态边缘电流直接提取QPC处手性边缘态的散射特性。利用这种散射对阿哈罗诺夫 - 玻姆型相位的敏感性，我们提出一种平衡协议，从基态边缘电流检测局部磁通量。我们还引入一种基于突然去除势偏置后的淬火后演化的动力学方案，对有限温度和粒子数涨落具有鲁棒性。由于任意子激发本身与局部量子化磁通量相关，我们的方法应可扩展到探测量子工程平台中的任意子统计相位。
英文摘要
Quantum point contacts (QPCs) are essential tools for transport experiments in solid-state systems, enabling the detection of fractional charges and anyonic braiding statistics. Realizing analogous transport setups in isolated quantum-simulation platforms, such as ultracold atoms, remains challenging, since it typically requires coupling to external reservoirs. Here we show that the scattering properties of chiral edge states at a QPC can instead be extracted directly from the stationary edge currents of an isolated, reservoir-free lattice system. Exploiting the sensitivity of this scattering to Aharonov-Bohm-type phases, we propose an equilibrium protocol to detect local magnetic fluxes from ground-state edge currents. We further introduce a dynamical scheme, robust against finite temperature and particle-number fluctuations, based on the post-quench evolution following a sudden potential-bias removal. Since anyonic excitations are themselves associated with a local, quantized magnetic flux, our approach should extend to probing anyonic statistical phases in quantum-engineered platforms.
Comments9 pages, 4+1 figures; comments are welcome
