Freiburg 2019 – wissenschaftliches Programm
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FM: Fall Meeting
FM 56: Entanglement: Many-Body Dynamics II
FM 56.7: Talk
Mittwoch, 25. September 2019, 15:45–16:00, 2004
Entanglement and partial distinguishability in many-body systems — •Eric Brunner1, Christoph Dittel1, Gabriel Dufour1,2, and Andreas Buchleitner1 — 1Quantenoptik und -statistik, Physikalisches Institut, Albert-Ludwigs-Universität Freiburg — 2Freiburg Institute for Advanced Studies, Albert-Ludwigs-Universität Freiburg
Exploring the structural properties of many-body interference in complex quantum systems plays a key role for an improved understanding and control of the underlying dynamics. Many-body interference in the involved constituents' dynamical degrees of freedom is controlled by their mutual (in)distinguishability. This, in turn, can be tuned by addressing suitable ``labelling" degrees of freedom. Through a systematic analysis of correlations between dynamical and labelling degrees of freedom, we define a hierarchy of indistinguishability measures for general many-body states. To reveal those correlations, we identify robust features of many-body interference patterns and propose an experimentally feasible protocol to quantify partial distinguishability in generic non-interacting many-body systems.