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Interferometric Measurements of Many-body Topological Invariants using Mobile Impurities
Fabian Grusdt, Norman Y. Yao, Dmitry A. Abanin +2
Topological quantum phases cannot be characterized by Ginzburg-Landau type order parameters, and are instead described by non-local topological invariants. Experimental platforms c…
New theoretical approaches to Bose polarons
Fabian Grusdt, Eugene Demler
The Fröhlich polaron model describes a ubiquitous class of problems concerned with understanding properties of a single mobile particle interacting with a bosonic reservoir. Origin…
An all-coupling theory for the Fröhlich polaron
Fabian Grusdt
The Fröhlich model describes the interaction of a mobile impurity with a surrounding bath of phonons which leads to the formation of a quasiparticle, the polaron. In this article a…
Bloch state tomography using Wilson lines
Tracy Li, Lucia Duca, Martin Reitter +6
Topology and geometry are essential to our understanding of modern physics, underlying many foundational concepts from high energy theories, quantum information, and condensed matt…
Tunable Fröhlich Polarons of slow-light polaritons in a two-dimensional Bose-Einstein condensate
Fabian Grusdt, Michael Fleischhauer
When an impurity interacts with a bath of phonons it forms a polaron. For increasing interaction strengths the mass of the polaron increases and it can become self-trapped. For imp…
Growing quantum states with topological order
Fabian Letscher, Fabian Grusdt, Michael Fleischhauer
We discuss a protocol for growing states with topological order in interacting many-body systems using a sequence of flux quanta and particle insertion. We first consider a simple…