Feasibility of free space quantum key distribution with coherent polarization states

D. Elser, T. Bartley, B. Heim, C. Wittmann, D. Sych, G. Leuchs, New Journal of Physics (2009) 045014.

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Abstract
We demonstrate for the first time the feasibility of free space quantum key distribution with continuous variables under real atmospheric conditions. More specifically, we transmit coherent polarization states over a 100 m free space channel on the roof of our institute's building. In our scheme, signal and local oscillator (LO) are combined in a single spatial mode, which auto-compensates atmospheric fluctuations and results in an excellent interference. Furthermore, the LO acts as a spatial and spectral filter, thus allowing unrestrained daylight operation.
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New Journal of Physics
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4
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045014
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Elser D, Bartley T, Heim B, Wittmann C, Sych D, Leuchs G. Feasibility of free space quantum key distribution with coherent polarization states. New Journal of Physics. 2009;(4):045014.
Elser, D., Bartley, T., Heim, B., Wittmann, C., Sych, D., & Leuchs, G. (2009). Feasibility of free space quantum key distribution with coherent polarization states. New Journal of Physics, (4), 045014.
@article{Elser_Bartley_Heim_Wittmann_Sych_Leuchs_2009, title={Feasibility of free space quantum key distribution with coherent polarization states}, number={4}, journal={New Journal of Physics}, author={Elser, D. and Bartley, Tim and Heim, B. and Wittmann, Ch and Sych, D. and Leuchs, G.}, year={2009}, pages={045014} }
Elser, D., Tim Bartley, B. Heim, Ch Wittmann, D. Sych, and G. Leuchs. “Feasibility of Free Space Quantum Key Distribution with Coherent Polarization States.” New Journal of Physics, no. 4 (2009): 045014.
D. Elser, T. Bartley, B. Heim, C. Wittmann, D. Sych, and G. Leuchs, “Feasibility of free space quantum key distribution with coherent polarization states,” New Journal of Physics, no. 4, p. 045014, 2009.
Elser, D., et al. “Feasibility of Free Space Quantum Key Distribution with Coherent Polarization States.” New Journal of Physics, no. 4, 2009, p. 045014.

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