Realization of one-dimensional anyons with arbitrary statistical phase

• 成果类型: Article
• 署名作者: Kwan, Joyce; Segura, Perrin; Li, Yanfei; Kim, Sooshin; Gorshkov, Alexey V.; Eckardt, Andre; Bakkali-Hassani, Brice; Greiner, Markus
• 署名单位: Harvard University; University System of Maryland; University of Maryland College Park; National Institute of Standards & Technology (NIST) - USA; University System of Maryland; University of Maryland College Park; National Institute of Standards & Technology (NIST) - USA; Technical University of Berlin; Pohang University of Science & Technology (POSTECH); Universite PSL; College de France; Ecole Normale Superieure (ENS); Centre National de la Recherche Scientifique (CNRS); Sorbonne Universite
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-11994
• DOI: 10.1126/science.adi3252
• 发表日期: 2024-11-29
• 页码: 1055-1060
• 关键词: fractional statistics; quantum walks; hanbury brown; MODEL; gas

摘要

Low-dimensional quantum systems can host anyons, particles with exchange statistics that are neither bosonic nor fermionic. However, the physics of anyons in one dimension remains largely unexplored. In this work, we realize Abelian anyons in one dimension with arbitrary exchange statistics using ultracold atoms in an optical lattice, where we engineer the statistical phase through a density-dependent Peierls phase. We explore the dynamical behavior of two anyons undergoing quantum walks and observe the anyonic Hanbury Brown-Twiss effect as well as the formation of bound states without on-site interactions. Once interactions are introduced, we observe spatially asymmetric transport in contrast to the symmetric dynamics of bosons and fermions. Our work forms the foundation for exploring the many-body behavior of one-dimensional anyons.