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Host: Jiadu Lin
Venue: TDLI Meeting Room N400
Tencent Meeting link: https://meeting.tencent.com/dm/i5HmVDEYNh9n Meeting ID: 703668890, no password
Abstract:
Anyons emerge as elementary excitations in low-dimensional quantum systems and exhibit behavior distinct from bosons or fermions. Despite intensive theoretical efforts, the experimental realization of anyons in one dimension has proven to be difficult. This talk will present the recent observation of emergent anyonic correlations in a one-dimensional strongly interacting quantum gas, based on the phenomenon of spin-charge separation [1]. A mobile impurity provides the necessary spin degree of freedom to engineer and probe these anyonic correlations. As a novel framework, we propose an effective “swap” model to capture the anyonization mechanism at the microscopic level [2]. The dynamical properties of the anyonic correlations are further explored. Going beyond the braid statistics, we also propose a concrete lattice model to realize a new type of anyons, which is described by a triad group [3]. We find generalized Friedel oscillations and the indication of approximate Haldane exclusion statistics. Our work provides new avenues for engineering many-body anyonic behavior in quantum simulation platforms.
References：
[1] S. Dhar, BW, M. Horvath, A. Vashisht, Y. Zeng, M. B. Zvonarev, N. Goldman, Y. Guo, M. Landini, and H.-C. Nägerl, Observing anyonization of bosons in a quantum gas, Nature 333, 104 (2025).
[2] BW, A. Vashisht, Y. Guo, S. Dhar, M. Landini, H.-C. Nägerl, and N. Goldman, Anyonization of bosons in one dimension: an effective swap model, arXiv:2504.21208.
[3] S. Nagies, BW, A.C. Knapp, A. Eckardt, and N.L. Harshman, Beyond braid statistics: Constructing a lattice model for anyons with exchange statistics intrinsic to one dimension, SciPost Phys. 16, 086 (2024).
Biography:
Dr. Botao Wang is a postdoctoral fellow at the Université libre de Bruxelles. He received his Ph.D. with the highest distinction, Summa Cum Laude, from TU Berlin and the Max Planck Institute for the Physics of Complex Systems. He currently holds a Senior Postdoctoral Fellowship from the Belgian Fund for Scientific Research (F.R.S.-FNRS). His research in theoretical cold atom physics and quantum simulation has led to several high-impact publications, including a co-first author paper in Nature and two first-author papers in Physical Review Letters. He has also authored a chapter in a recent textbook and serves as a reviewer for the Physical Review series (Letters, A, B, and Research).