Researching | Quantum Key Distribution Based on Heralded Single Photon Sources and Quantum Memory

Chinese Journal of Lasers, Volume. 46, Issue 4, 0412001(2019)

Quantum Key Distribution Based on Heralded Single Photon Sources and Quantum Memory

Yefeng He^1,2、*, Deng Wang^1,2、*, Hongjuan Yang², Chang Song², and Dongqi Li²

Author Affiliations

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

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

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Figures&Tables (7)

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Figures & Tables(7)

Fig. 1. HSPS-MID-QKD structure diagram based on quantum memory

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Fig. 2. Secure transmission distance versus minimum decoherence time

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Fig. 3. Curve of key generation rate

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Fig. 4. Key generation rate versus secure transmission distance

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Table 1. Comparison of photon numbers of different light sources
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Table 1. Comparison of photon numbers of different light sources
Source Single photon Multi-photon
WCS 0.3033 0.0902
HSPS 0.7274 0.2726

Table 2. Bit-flip operation list
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Table 2. Bit-flip operation list
Base Project on |ψ⁺> Project on |ψ^->
z Bit-flip Bit-flip
x No change Bit-flip

Table 3. Main simulation parameters
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Table 3. Main simulation parameters
Parameter e₀ e_d P_D η_M η_D
Value 0.5 1.5% 10^-6 0.6 0.2

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Yefeng He, Deng Wang, Hongjuan Yang, Chang Song, Dongqi Li. Quantum Key Distribution Based on Heralded Single Photon Sources and Quantum Memory[J]. Chinese Journal of Lasers, 2019, 46(4): 0412001

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Paper Information

Category: quantum optics

Received: Nov. 20, 2018

Accepted: Dec. 21, 2018

Published Online: May. 9, 2019

The Author Email:

DOI:10.3788/CJL201946.0412001

Topics

laser devices and laser physics

Lasers and Laser Optics

laser manufacturing

Instrumentation, Measurement and Metrology