Heidelberg 2015 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 24: Quantum Effects: Entanglement and Decoherence III

Q 24.7: Talk

Tuesday, March 24, 2015, 16:00–16:15, B/gHS

Twisted photons' state evolution and bipartite entaglement decay in atmospheric turbulence — •Francesco Campaioli, Vyacheslav Shatokhin, and Andreas Buchleitner — Hermann-Herder-Straße 3 79104 Freiburg im Breisgau

When a photon with a well defined orbital angular momentum (OAM) traverses the atmosphere, its states spreads over the unbounded OAM basis. We study how the size of the effective finite-dimensional Hilbert space scales, as a function of the initial state and of the strength of the atmospheric turbulence. Our results are then used to infer the dynamical evolution of bipartite OAM states and of the entanglement they carry, under the effect of weak turbulence.