Hannover 2013 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 60: Quantum effects: Entanglement and decoherence I

Q 60.5: Talk

Friday, March 22, 2013, 12:15–12:30, A 310

Entanglement evolution of two entangled OAM photons under the effect of atmospheric turbulence — •Nina Leonhard, Vyacheslav Shatokhin, and Andreas Buchleitner — Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Germany

Quantum information can be encoded into wave fronts of photons carrying orbital angular momentum (OAM), with an experimentally achieved Hilbert space dimension of several hundred [1]. As such, photons with OAM are very promising for free-space quantum communication. However, free-space links are intrinsically noisy due to atmospheric turbulence, causing distortion of the photon’s wave fronts and deterioration of quantum information. In this talk we will discuss the impact of the atmospheric turbulence on the propagation of two OAM-entangled qudits.

[1] R. Fickler et al., Science, 338, 6107 (2012)