Hannover 2016 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 42: Poster: Quantum Optics and Photonics III

Q 42.39: Poster

Wednesday, March 2, 2016, 16:30–19:00, Empore Lichthof

Towards squeezing distillation for free-space links — •Andreas Thurn, Kevin Günthner, Christian Peuntinger, Dominique Elser, Christoph Marquardt, and Gerd Leuchs — Max Planck Institute for the Science of Light (MPL), Erlangen, Germany and Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)

Squeezed states of light are an important resource for continuous variable quantum information protocols. Such states are fragile and degraded during transmission due to unavoidable coupling to the environment leading to excess noise and loss. Squeezing distillation is a way to overcome this degradation of squeezed states and has already been successfully implemented in a laboratory environment [1]. We want to go beyond laboratory experiments and investigate the potential of squeezing distillation in the case of natural noise stemming from a free-space link. This link is a realistic intra city free-space channel of 1.6km length being subject to atmospheric turbulences [2].

[1] J.  Heersink et al., Phys. Rev. Lett. 96, 253601 (2006).

[2] C.  Peuntinger et al., Phys. Rev. Lett. 113, 060502 (2014).