Quantum Key Distribution Based on Heralded Pair Coherent State and Orbital Angular Momentum

Yefeng He; Hongjuan Yang; Deng Wang; Dongqi Li; Chang Song

doi:10.3788/AOS201939.0427001

Acta Optica Sinica, Volume. 39, Issue 4, 0427001(2019)

Quantum Key Distribution Based on Heralded Pair Coherent State and Orbital Angular Momentum

Yefeng He^1,2, Hongjuan Yang^2、*, Deng Wang^1,2, Dongqi Li², and Chang Song^1,2

¹ National Engineering Laboratory for Wireless Security, Xi'an University of Posts & Telecommunications, Xi'an, Shaanxi 710121, China;

² School of Communication and Information Engineering, Xi'an University of Posts & Telecommunications, Xi'an, Shaanxi 710121, China;

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Figures & Tables(6)

Fig. 1. MDI-QKD protocol based on HPCS and OAM

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Fig. 2. Relationship between channel transmission loss and mean photon number

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Fig. 3. Relationship between channel transmission loss and unilateral transmission efficiency

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Fig. 4. Relationship between channel transmission loss and key generation rate

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Table 1. Photon distributions of WCS,HSPS and HPCS
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Table 1. Photon distributions of WCS,HSPS and HPCS
Source Single photon Multi-photon Vacuum event
WCS 0.3033 0.0902 0.6065
HSPS 0.7274 0.2726 1.94×10^-6
HPCS 0.9255 0.0744 4.93×10^-6

Table 2. Main simulation parameters
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Table 2. Main simulation parameters
Parameter P_d f e₀ η_d
Value 3.6×10^-6 1.17 0.5 0.3

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Yefeng He, Hongjuan Yang, Deng Wang, Dongqi Li, Chang Song. Quantum Key Distribution Based on Heralded Pair Coherent State and Orbital Angular Momentum[J]. Acta Optica Sinica, 2019, 39(4): 0427001

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