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Polarization design for ground-to-satellite quantum entanglement distribution

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 نشر من قبل Xuan Han
 تاريخ النشر 2019
  مجال البحث فيزياء
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Polarization maintenance is a key technology for free-space quantum communication. In this paper, we describe a polarization maintenance design of a transmitting antenna with an average polarization extinction ratio of 887 : 1 by a local test. We implemented a feasible polarization-compensation scheme for satellite motions that has a polarization fidelity more than 0.995. Finally, we distribute entanglement to a satellite from ground for the first time with a violation of Bell inequality by 2.312+-0.096.



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