Entanglement Degradation of Photons Entangled States in Oceanic Turbulence

Qinwei ZHANG; Xia LIU; Lianzhen CAO; Yang YANG; Yingde LI; Jiaqiang ZHAO

doi:10.3788/gzxb20215012.1201006

Acta Photonica Sinica, Volume. 50, Issue 12, 1201006(2021)

Entanglement Degradation of Photons Entangled States in Oceanic Turbulence

Qinwei ZHANG, Xia LIU^*, Lianzhen CAO, Yang YANG, Yingde LI, and Jiaqiang ZHAO

Shandong Provincial Key Laboratory of Multi-photon Entanglement and Manipulation，Department of Physics and Optoelectronic Engineering， Weifang University， Weifang ， Shandong 261061， China

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Fig. 1. A generic scheme used to investigate the effect of oceanic turbulence on the spatial two-qubit entangled states prepared by SPDC

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Fig. 2. The change of concurrence with the laboratory setup in the oceanic turbulence （ $λ = 532 n m$ ， $z = 100 m$ ， $ω = - 4$ ， $χ_{T} = 10^{- 7} K^{2} / s$ ， $ε = 10^{- 5} m^{2} / s^{3}$ ）

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Fig. 3. The effects of oceanic turbulence on the concurrence （ $d_{1} = 10^{- 3} m$ ， $d_{2} = 10^{- 2} m$ ， $θ = π / 4$ ， $λ = 532 n m$ ）

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Qinwei ZHANG, Xia LIU, Lianzhen CAO, Yang YANG, Yingde LI, Jiaqiang ZHAO. Entanglement Degradation of Photons Entangled States in Oceanic Turbulence[J]. Acta Photonica Sinica, 2021, 50(12): 1201006

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Paper Information

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Received: Jun. 8, 2021

Accepted: Aug. 30, 2021

Published Online: Jan. 25, 2022

The Author Email: LIU Xia (liuxia@wfu.edu.cn)

DOI:10.3788/gzxb20215012.1201006

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