Homodyne detection for atmosphere channels

Details Homodyne detection for atmosphere channels Homodyne detection for atmosphere channels

2011-11-03

arxiv.org/abs/1111.0734v1

Physics

Quantum Physics

9 pages, 5 figures

Scientific paper

We give a systematic theoretical description of homodyne detection in the case when both the signal and the local oscillator pass through the turbulent atmosphere. Imperfect knowledge of the local-oscillator amplitude is effectively included in a noisy density operator, leading to post-processing noise. Alternatively, we propose a technique with monitored transmission coefficient of the atmosphere, which is free of post-processing noise.

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