Hannover 2020 – scientific programme

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A: Fachverband Atomphysik

A 21: Ultracold plasmas and Rydberg systems I (joint session Q/A)

A 21.8: Talk

Wednesday, March 11, 2020, 15:45–16:00, f342

Distinguishability-induced quantum-to-classical transitions in many-body interference — •Christian Haen, Christoph Dittel, and Andreas Buchleitner — Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Federal Republic of Germany

We study how partial particle distinguishability induces a transition from the quantum to the classical regime in interference scenarios of many, possibly interacting particles. By continuously tuning the particles’ indistinguishability with respect to their internal degrees of freedom, we investigate the transition’s statistical imprint – as revealed by interference visibilities [1] or the variance of on-site densities [2] – on the particles’ dynamical evolution. Moreover, we assess the impact of a dynamical evolution of the internal degrees on the quantum-to-classical transition. Such internal dynamics may be induced by interactions with an environment and, thus, pave the way towards an open system theory of identical particles.

[1] C. Dittel, et al., arXiv, 1901.02810 (2019)

[2] T. Brünner, et al., Phys. Rev. Lett. 120, 210401 (2018)