IQP Seminar: Exploring the dynamical and ground state properties of 1D anyons

by Joyce Kwan (Harvard U)

Wednesday 15 Nov 2023, 13:30 → 15:00 Europe/Berlin

ZOQ Center for Optical Quantum Technologies, Luruper Chaussee 149, bldg. 69

Abstract:

Low-dimensional quantum systems can host anyons, particles with exchange statistics that are neither bosonic nor fermionic. Despite indications of a wealth of exotic phenomena, the physics of anyons in one dimension (1D) remains largely unexplored. In this talk, we present the first experimental realization of Abelian anyons in 1D using ultracold atoms in an optical lattice, where we engineer the statistical parameter via a density-dependent Peierls phase. Our scheme, based on Floquet engineering, allows for arbitrary exchange statistics and tunable interactions, which we leverage to explore the dynamical behavior of two anyons undergoing quantum walks.  We observe the anyonic Hanbury Brown-Twiss effect and the formation of bound states without effective on-site interactions. Then, once interactions are introduced, we observe spatially asymmetric transport in contrast to the symmetric dynamics of bosons and fermions. Finally, we present ongoing work exploring the ground state properties of these 1D anyons. Our work expands the toolset for Hamiltonian engineering, and enables the experimental exploration of the physics of 1D anyons.



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Zoom data, for the entire semester:

https://uni-hamburg.zoom.us/j/63754275322?pwd=OVYzMXJSUzdyTE0zN0FOYitsSVA3QT09

Meeting-ID: 637 5427 5322
Kenncode: 58810268