Influence of coincidence detection through free-space atmospheric turbulence using partial spatial coherence

• URL: http://arxiv.org/abs/2006.12911v1
• Date: Tue, 23 Jun 2020 11:34:20 GMT
• Title: Influence of coincidence detection through free-space atmospheric turbulence using partial spatial coherence
• Authors: Samkelisiwe Purity Phehlukwayo and Marie Louise Umuhire and Yaseera Ismail and Stuti Joshi and Francesco Petruccione
• Abstract summary: The atmospheric turbulence of the environment poses a severe challenge to the optical quantum link. A spatial light modulator is encoded with Kolmogorov model to mimic the atmospheric turbulence strength. The results show that the photon pairs generated using a partially spatially coherent pump are more robust towards varying atmospheric turbulence strengths than the photon pairs produced by a fully spatially coherent pump beam.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The development of a quantum network relies on the advances of hybrid systems which includes ground to ground communication. However, the atmospheric turbulence of the environment poses a severe challenge to the optical quantum link. In this paper, we outline a theoretical and experimental investigation of the influence of atmospheric turbulence on the coincidence detection of the entangled photon pairs using a fully and partially spatially coherent pump beam. A spatial light modulator is encoded with Kolmogorov model to mimic the atmospheric turbulence strength. The results show that the photon pairs generated using a partially spatially coherent pump are more robust towards varying atmospheric turbulence strengths than the photon pairs produced by a fully spatially coherent pump beam.

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