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

Journals >Acta Photonica Sinica >Volume 50 >Issue 12 >Page 1201006 > Article

Acta Photonica Sinica
Vol. 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

Author Affiliations

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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DOI: 10.3788/gzxb20215012.1201006 Cite this Article

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 Copy Citation Text

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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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The change of concurrence with the laboratory setup in the oceanic turbulence （λ=532 nm， z=100 m， ω=-4， χT=10-7 K2/s， ε=10-5 m2/s3）

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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