Performance Analysis of Airborne MDI-QKD Based on Orbital Angular Momentum Encoding

Dan Wu; Jiahao Li; Jie Tang; Zhifeng Deng; Ying Liu; Xingyu Wang; Lei Shi

doi:10.3788/LOP241377

Laser & Optoelectronics Progress, Volume. 61, Issue 15, 1506007(2024)

Performance Analysis of Airborne MDI-QKD Based on Orbital Angular Momentum Encoding

Dan Wu, Jiahao Li, Jie Tang, Zhifeng Deng, Ying Liu, Xingyu Wang, and Lei Shi^*

Author Affiliations

College of Information and Navigation, Air Force Engineering University, Xi'an 710077, Shaanxi, China

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Figures & Tables(10)

Fig. 1. Schematic diagram of ground-to-UAV MDI-QKD scenarios

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$Schematic diagram of state-dependent diffraction$

Fig. 2. Schematic diagram of state-dependent diffraction

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Fig. 3. SDD effects for different wavelengths

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Fig. 4. Schematic diagram of UAV coordinates

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Fig. 5. Schematic diagram of OAM-MDI-QKD protocol

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Fig. 6. Relationship between key rate and transmission distance under different coding scheme

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$Transmission efficiency of state-dependent diffraction against transmission distance of different OAM orders$

Fig. 7. Transmission efficiency of state-dependent diffraction against transmission distance of different OAM orders

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Fig. 8. Variation of key rate as a function of transmission distance under different effects

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Table 1. Value of wind speed and jitter angle^[24]
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Table 1. Value of wind speed and jitter angle^[24]
Wind speed /（m·s^-1） Divergence of jitter angle θ_j /（°）
2 1‒2
3 2‒5
4 4‒8
5 5‒11

Table 2. Experimental parameters

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Table 2. Experimental parameters

Parameter	Value
Background count rate P_d	3×10^-6
Link attenuation β	0.6
OAM index l	4
Error correction inefficiency f	1.16
Finite size of date N	10¹⁵
Standard deviation n_α	5
μ₂（ν₂）	0.36
μ₁（ν₁）	0.10
μ₀（ν₀）	0
Altitude H /km	10
Aperture diameter D_r（D_t）/m	0.26
Wavelength λ /m	1.55×10^-6
Beam waist w₀ /m	0.02
Refractive-index structure parameter C_n²/m^-2/3	10^-15
Divergence of pointing jitter θ_j /μrad	5

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Dan Wu, Jiahao Li, Jie Tang, Zhifeng Deng, Ying Liu, Xingyu Wang, Lei Shi. Performance Analysis of Airborne MDI-QKD Based on Orbital Angular Momentum Encoding[J]. Laser & Optoelectronics Progress, 2024, 61(15): 1506007

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