Hannover 2013 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 17: Quantum effects: Interference and correlations
Q 17.3: Vortrag
Montag, 18. März 2013, 17:15–17:30, F 342
Bosonic behavior of entangled fermions — •Malte C. Tichy1, Peter Alexander Bouvrie2, and Klaus Mølmer1 — 1Lundbeck Foundation Theoretical Center for Quantum System Research, Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C, Denmark — 2Departamento de Física Atómica, Molecular y Nuclear and Instituto Carlos I de Física Teórica y Computacional, Universidad de Granada, E-18071 Granada, Spain
Two bound, entangled fermions form a composite boson, which can be treated as an elementary boson as long as the Pauli principle remains irrelevant. The bosonic character of the composite is intimately linked to the entanglement of the fermions: Large entanglement implies good bosonic properties [1]. The deviation from perfect bosonic behavior manifests itself in the statistical properties of the composites and in their collective interference. As a consequence, the counting statistics exhibited by composites allow one to infer the form of the two-fermion wave-function [2]. Bosonic behavior can thus be used as a probe for the underlying structure of composite particles without directly accessing their constituents.
[1] M.C. Tichy, P.A. Bouvrie, K. Mølmer, Phys. Rev. A 86, 042317 (2012).
[2] M.C. Tichy, P.A. Bouvrie, K. Mølmer, arxiv:1209.3610, Phys. Rev. Lett., in press.