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Homodyne detection for atmosphere channels

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arxiv 1111.0734 v2 pith:TH3VLODD submitted 2011-11-03 quant-ph

Homodyne detection for atmosphere channels

classification quant-ph
keywords atmospheredetectionhomodynenoisepostprocessingalternativelyamplitudecase
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We give a systematic theoretical description of homodyne detection in the case where 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 postprocessing noise. Alternatively, we propose a technique with monitored transmission coefficient of the atmosphere, which is free of postprocessing noise.

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