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FM: Fall Meeting

FM 37: Open and Complex Quantum Systems II

FM 37.4: Talk

Dienstag, 24. September 2019, 14:45–15:00, 3042

Wave-particle duality of many-body quantum states — •Christoph Dittel^1,2, Gabriel Dufour^2,3, Gregor Weihs¹, and Andreas Buchleitner² — ¹Institut für Experimentalphysik, Universität Innsbruck, Technikerstr. 25, 6020 Innsbruck, Austria — ²Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany — ³Freiburg Institute for Advanced Studies, Albert-Ludwigs-Universität-Freiburg, Albertstr. 19, 79104 Freiburg, Germany

We formulate a quantitative theory of wave-particle duality for many-body quantum states and derive complementarity relations for the wave and particle character of many identical bosons or fermions equipped with a tunable level of distinguishability. We show that our complementarity relations fundamentally constrain measurement statistics and interference visibilities in general experimental settings with possibly interacting particles, and, thereby, provide a versatile framework to certify and benchmark complementarity and particle indistinguishability in many-body quantum protocols.