Chinese Optics Letters, Volume. 17, Issue 11, 112701(2019)
High efficiency continuous-variable quantum key distribution based on QC-LDPC codes
Fig. 1.
Fig. 3. Performance of constructed LDPC codes with
Fig. 4. performance of constructed LDPC codes with
Fig. 5. Experimental setup of CVQKD scheme based on GG02 protocol. CW laser, continuous-wave laser; BS, beam splitter; AM, amplitude modulator; PM, phase modulator; ATT, attenuator.
Fig. 6. (a) FER values of constructed QC-LDPC codes with rates 1/4 and 10/52. (b) FER values of constructed QC-LDPC codes with rates 1/3 and 22/68. Both (a) and (b) are binary phase-shift keying (BPSK) modulation, max iteration
Fig. 7. Secret key rate as a function of distance for a CVQKD system with a homodyne detector, excess noise
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Ying Guo, Kangshuai Wang, Duan Huang, Xueqin Jiang, "High efficiency continuous-variable quantum key distribution based on QC-LDPC codes," Chin. Opt. Lett. 17, 112701 (2019)
Category: Quantum optics
Received: Apr. 8, 2019
Accepted: Jun. 26, 2019
Posted: Jun. 27, 2019
Published Online: Sep. 16, 2019
The Author Email: Duan Huang (duanhuang@csu.edu.cn)