Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 21: Matter Wave Optics
Q 21.8: Vortrag
Dienstag, 1. März 2016, 16:15–16:30, a310
Multiparticle correlations in complex scattering: birthday paradox and Hong-Ou-Mandel profiles in mesoscopic systems — •Juan-Diego Urbina1, Jack Kuipers1, Klaus Richter1, Quirin Hummel1, and Sho Matsumoto2 — 1Institut für Theoretische Physik, Universität Regensburg, D-93040 Regensburg, Germany — 2Graduate School of Science and Engineering, Kagoshima University, 1-21-35, Korimoto, Kagoshima, Japan
In this presentation we generalize the Hong-Ou-Mandel effect to the mesoscopic regime of complex scattering and to macroscopically occupied incoming wavepackets. This is aachieved by a complete enumeration of all processes in terms of interfering many-body paths that allow us to study universal effects due to the interplay between instability of the single-particle classical motion and quantum indistinguishability.
We show how, in the limit of large particle number, one finds a mesoscopic version of the bosonic birthday paradox responsible for a sharp quantum-classical transition. Furthermore, under a scaling that defines the classical-quantum boundary we predict a macroscopic, experimentally accessible Hong-Ou-Mandel profile. Our methods can be extended to the quantum optics domain, and point towards a mesoscopic implementation of the boson sampling problem.