Measurement-Device-Independent Quantum Key Distribution of Finite Detector's Dead Time in Heralded Pair Coherent State

Yefeng He; Yankun Zhao; Chunyu Li; Jiarui Guo

doi:10.3788/AOS202040.2427001

Acta Optica Sinica, Volume. 40, Issue 24, 2427001(2020)

Measurement-Device-Independent Quantum Key Distribution of Finite Detector's Dead Time in Heralded Pair Coherent State

Yefeng He^1,3, Yankun Zhao^2、*, Chunyu Li², and Jiarui Guo¹

Author Affiliations

¹School of Cyberspace Security, Xi'an University of Posts and Telecommunications, Xi'an, Shaanxi 710121, China

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

³Guangxi Key Laboratory of Cryptography and Information Security, Guilin University of Electronic Technology, Guilin, Guangxi 541004, China

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Figures & Tables(7)

Fig. 1. System model of MDI-QKD protocol based on HPCS photon source

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Fig. 2. Relationship between transmission rate and secure key generation rate

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Fig. 3. Relationship between secure key generation rate and transmission rate under each detector's dead time

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Table 1. Photon number distributions of WCS and HPCS photon sources^[33]
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Table 1. Photon number distributions of WCS and HPCS photon sources^[33]
Source Single photon Multi photon Vacuum event
WCS 0.3033 0.0902 0.6065
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 e₀ η_d
Value 3.6×10^-6 0.5 0.145

Table 3. Secure key generation rates of HPCS and WCS sources at different signal transmission rates but same detector's dead timeunit: bit·s^-1
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Table 3. Secure key generation rates of HPCS and WCS sources at different signal transmission rates but same detector's dead timeunit: bit·s^-1
Source ρ=10¹² bit·s^-1 ρ=10¹⁴ bit·s^-1 ρ=10¹⁵ bit·s^-1
WCS 1.3×10⁵ 7.7×10⁶ 1.6×10⁷
HPCS 5.7×10⁸ 3.4×10¹⁰ 7.2×10¹⁰

Table 4. Secure key generation rates of HPCS sources under different detector's dead time and signal transmission ratesunit: bit·s^-1
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Table 4. Secure key generation rates of HPCS sources under different detector's dead time and signal transmission ratesunit: bit·s^-1
Detector'sdead time ρ=10¹⁴ bit·s^-1 ρ=10¹⁵ bit·s^-1
τ=50 ns 4.2×10¹⁰ 12.8×10¹⁰
τ=100 ns 3.4×10¹⁰ 7.2×10¹⁰
τ=150 ns 2.8×10¹⁰ 5.0×10¹⁰

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Yefeng He, Yankun Zhao, Chunyu Li, Jiarui Guo. Measurement-Device-Independent Quantum Key Distribution of Finite Detector's Dead Time in Heralded Pair Coherent State[J]. Acta Optica Sinica, 2020, 40(24): 2427001

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Paper Information

Category: Quantum Optics

Received: Jul. 28, 2020

Accepted: Sep. 15, 2020

Published Online: Nov. 23, 2020

The Author Email: Zhao Yankun (1364853816@qq.com)

DOI:10.3788/AOS202040.2427001

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Photon number distributions of WCS and HPCS photon sources[33]

Table 1. Photon number distributions of WCS and HPCS photon sources[33]

Table 2. Main simulation parameters

Table 2. Main simulation parameters

Table 3. Secure key generation rates of HPCS and WCS sources at different signal transmission rates but same detector's dead timeunit: bit·s-1

Table 3. Secure key generation rates of HPCS and WCS sources at different signal transmission rates but same detector's dead timeunit: bit·s-1

Table 4. Secure key generation rates of HPCS sources under different detector's dead time and signal transmission ratesunit: bit·s-1

Table 4. Secure key generation rates of HPCS sources under different detector's dead time and signal transmission ratesunit: bit·s-1

Table 1. Photon number distributions of WCS and HPCS photon sources^[33]

Table 1. Photon number distributions of WCS and HPCS photon sources^[33]

Table 3. Secure key generation rates of HPCS and WCS sources at different signal transmission rates but same detector's dead timeunit: bit·s^-1

Table 3. Secure key generation rates of HPCS and WCS sources at different signal transmission rates but same detector's dead timeunit: bit·s^-1

Table 4. Secure key generation rates of HPCS sources under different detector's dead time and signal transmission ratesunit: bit·s^-1

Table 4. Secure key generation rates of HPCS sources under different detector's dead time and signal transmission ratesunit: bit·s^-1