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Q: Fachverband Quantenoptik und Photonik

Q 8: Quanteninformation: Konzepte und Methoden 2

Q 8.2: Vortrag

Montag, 12. März 2012, 14:15–14:30, V38.04

Detecting entanglement in spatial interference — Clemens Gneiting¹ and •Klaus Hornberger² — ¹Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg — ²Universität Duisburg-Essen, Lotharstr. 1-21, 47057 Duisburg

We discuss an experimentally amenable class of two-particle states of motion giving rise to nonlocal spatial interference under position measurements. Using the concept of modular variables, we derive a separability criterion which is violated by these non-Gaussian states. While we focus on the free motion of material particles, the presented results are valid for any pair of canonically conjugate continuous variable observables and should apply to a variety of bipartite interference phenomena.