Rostock 2019 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 30: Matter Wave Optics
Q 30.4: Talk
Wednesday, March 13, 2019, 11:30–11:45, S SR 211 Maschb.
Quantifying partial distinguishability in many-particle systems — •Eric Brunner1, Gabriel Dufour1,2, and Andreas Buchleitner1 — 1Physikalisches Institut, Albert-Ludwigs-Universität Freiburg — 2Freiburg Institute for Advanced Studies, Albert-Ludwigs-Universität Freiburg
Many-particle interference is an essential ingredient in the complex dynamics of quantum systems and a consequence of the particles' indistinguishability. We consider particles whose state space is augmented by an internal degree of freedom, which allows one to adjust their mutual distinguishability. Within this framework we quantify (partial) distinguishability of many-body states and investigate its influence on the expectation values of many-particle observables. These ideas can equally be applied to study correlations at the output of multi-mode interferometers, as well as the dynamics of interacting many-body systems. This paves the way for a generalization of the Hong-Ou-Mandel indistinguishability test to bosonic and fermionic systems of more than two particles.