Dresden 2011 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 57: Poster 3: Quantengase, Ultrakalte Atome, Ultrakalte Moleküle, Materiewellen Optik, Präzisionsmessungen, Metrologie
Q 57.2: Poster
Thursday, March 17, 2011, 16:30–19:30, P1
Many boson- vs. many-fermion interference -- differences and similarities — •Malte C. Tichy1, Markus Tiersch2, Florian Mintert1,3, and Andreas Buchleitner1 — 1Physikalisches Institut - Universität Freiburg - Hermann-Herder-Str. 3 - D-79104 Freiburg — 2Institute for Quantum Optics and Quantum Information - Austrian Academy of Sciences - Technikerstr. 21A - A-6020 Innsbruck, Austria — 3Freiburg Institute for Advanced Studies - Universität Freiburg - Albertstr. 19 - D-79104 Freiburg
We discuss many-particle interference in the scattering of an arbitrary number of non-interacting bosons, fermions, or distinguishable particles within general scenarios. For the case of Fourier multiport beam splitters, a suppression law is derived [1] for both bosons and fermions, providing a generalization of the two-photon Hong-Ou-Mandel effect. In general, the intuitive dichotomy of bosons and fermions, known from the two-particle case, does, surprisingly, not prevail for more than two particles. The statistical behavior of identical particles -- bunching for bosons and the Pauli principle for fermions -- and many-particle interference that governs the particles' behavior in any scattering scenario need to be considered as two largely independent effects.
[1] M.C. Tichy et al., Phys. Rev. Lett. 104, 220405 (2010)