He Ying; Wang Tian-Yi; Li Ying-Ying

doi:10.7498/aps.73.20241094

Abstract

In experimental setups of continuous-variable quantum key distribution (CVQKD) independently modulating the amplitude and phase of coherent states, the ideal Gaussian modulation will be degraded into discretized polar modulation (DPM) due to the finite resolution of the driving voltages of electro-optical modulators. To compensate for the performance degradation induced by the joint effect of amplitude and phase discretization, linear optics cloning machine (LOCM) can be introduced on the receiver side. Implemented by linear optical elements, heterodyne detection and controlled displacement, LOCM introduces extra noise that can be transformed into an advantageous one to combat channel excess noise by dynamically adjusting the relevant parameters into a suitable range. In this paper, the prepare-and-measure version of LOCM DPM-CVQKD is presented, where the incoming signal state enters a tunable LOCM before being measured by the nonideal heterodyne detector. The equivalent entanglement-based model is also established to perform security analysis, where the LOCM is reformulated into combination of the incoming signal state and a thermal state on a beam splitter. The composable secret key rate is derived to investigate the security of LOCM DPM-CVQKD. Simulation results demonstrate that the composable secret key rate and transmission distance are closely related to the tuning gain and the transmittance of LOCM. Once these two parameters are set to appropriate values, LOCM can improve the secret key rate and transmission distance of DPM-CVQKD, as well as its resistance to excess noise. Meanwhile, taking finite-size effect into consideration, the LOCM can also effectively reduce the requirement for the block size of the exchanged signals, which is beneficial to the feasibility and practicability of CVQKD. Owing to the fact that the performance of LOCM DPM-CVQKD is largely reliant on the calibration selection of relevant parameters, further research may concentrate on the optimization of LOCM in experimental implementations, where machine learning related methods may be utilized.

Keywords:

Authors and contacts

Corresponding author: Wang Tian-Yi, tywang@gzu.edu.cn

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 62361009) and the Science and Technology Projects of Guizhou Province, China (Grant No. ZK[2021]304).

FullText HTML : translate this paragraph

References

[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]
[29]
[30]
[31]
[32]
[33]
[34]
[35]
[36]
[37]
[38]
[39]
[40]

Cited By

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

map

[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]
[29]
[30]
[31]
[32]
[33]
[34]
[35]
[36]
[37]
[38]
[39]
[40]

[1]	Wu Xiao-Dong, Huang Duan. Practical continuous variable quantum secret sharing scheme based on non-ideal quantum state preparation. Acta Physica Sinica, 2024, 73(2): 020304. doi: 10.7498/aps.73.20230138
[2]	He Ying, Wang TianYi, Li YingYing. Composable security analysis of linear optics cloning machine enhanced discretized polar modulation continuous-variable quantum key distribution. Acta Physica Sinica, 2024, 73(23): . doi: 10.7498/aps.20241094
[3]	Wang Mei-Hong, Hao Shu-Hong, Qin Zhong-Zhong, Su Xiao-Long. Research advances in continuous-variable quantum computation and quantum error correction. Acta Physica Sinica, 2022, 71(16): 160305. doi: 10.7498/aps.71.20220635
[4]	Wen Zhen-Nan, Yi You-Gen, Xu Xiao-Wen, Guo Ying. Continuous variable quantum teleportation with noiseless linear amplifier. Acta Physica Sinica, 2022, 71(13): 130307. doi: 10.7498/aps.71.20212341
[5]	Wu Xiao-Dong, Huang Duan, Huang Peng, Guo Ying. Discrete modulation continuous-variable measurement-device-independent quantum key distribution scheme based on realistic detector compensation. Acta Physica Sinica, 2022, 71(24): 240304. doi: 10.7498/aps.71.20221072
[6]	Zhong Hai, Ye Wei, Wu Xiao-Dong, Guo Ying. Optical preamplifier based simultaneous quantum key distribution and classical communication scheme. Acta Physica Sinica, 2021, 70(2): 020301. doi: 10.7498/aps.70.20200855
[7]	Mao Yi-Yu, Wang Yi-Jun, Guo Ying, Mao Yu-Hao, Huang Wen-Ti. Continuous-variable quantum key distribution based on peak-compensation. Acta Physica Sinica, 2021, 70(11): 110302. doi: 10.7498/aps.70.20202073
[8]	Ye Wei, Guo Ying, Xia Ying, Zhong Hai, Zhang Huan, Ding Jian-Zhi, Hu Li-Yun. Discrete modulation continuous-variable quantum key distribution based on quantum catalysis. Acta Physica Sinica, 2020, 69(6): 060301. doi: 10.7498/aps.69.20191689
[9]	Luo Jun-Wen, Wu De-Wei, Li Xiang, Zhu Hao-Nan, Wei Tian-Li. Continuous variable polarization entanglement in microwave domain. Acta Physica Sinica, 2019, 68(6): 064204. doi: 10.7498/aps.68.20181911
[10]	Xu Bing-Jie, Tang Chun-Ming, Chen Hui, Zhang Wen-Zheng, Zhu Fu-Chen. Improving the maximum transmission distance of coutinuous variable no-switching QKD protocol. Acta Physica Sinica, 2013, 62(7): 070301. doi: 10.7498/aps.62.070301
[11]	Yan Zhi-Hui, Jia Xiao-Jun, Xie Chang-De, Peng Kun-Chi. Continuous-variable three-color tripartite entangled state generated by a non-degenerate optical parameter oscillator. Acta Physica Sinica, 2012, 61(1): 014206. doi: 10.7498/aps.61.014206
[12]	Song Han-Chong, Gong Li-Hua, Zhou Nan-Run. Continuous-variable quantum deterministic key distribution protocol based on quantum teleportation. Acta Physica Sinica, 2012, 61(15): 154206. doi: 10.7498/aps.61.154206
[13]	Zhu Chang-Hua, Chen Nan, Pei Chang-Xing, Quan Dong-Xiao, Yi Yun-Hui. Adaptive continuous variable quantum key distribution based on channel estimation. Acta Physica Sinica, 2009, 58(4): 2184-2188. doi: 10.7498/aps.58.2184
[14]	Hu Hua-Peng, Zhang Jing, Wang Jin-Dong, Huang Yu-Xian, Lu Yi-Qun, Liu Song-Hao, Lu Wei. Experimental quantum key distribution with double protocol. Acta Physica Sinica, 2008, 57(9): 5605-5611. doi: 10.7498/aps.57.5605
[15]	Zhang Jing, Wang Fa-Qiang, Zhao Feng, Lu Yi-Qun, Liu Song-Hao. Quantum key distribution based on time coding and phase coding. Acta Physica Sinica, 2008, 57(8): 4941-4946. doi: 10.7498/aps.57.4941
[16]	He Guang-Qiang, Guo Hong-Bin, Li Yu-Dan, Zhu Si-Wei, Zeng Gui-Hua. Quantum key distribution using binary-modulated coherent states. Acta Physica Sinica, 2008, 57(4): 2212-2217. doi: 10.7498/aps.57.2212
[17]	Feng Fa-Yong, Zhang Qiang. Quantum key distribution based on hyperentanglement swapping. Acta Physica Sinica, 2007, 56(4): 1924-1927. doi: 10.7498/aps.56.1924
[18]	Chen Jie, Li Yao, Wu Guang, Zeng He-Ping. Stable quantum key distribution with polarization control. Acta Physica Sinica, 2007, 56(9): 5243-5247. doi: 10.7498/aps.56.5243
[19]	Chen Xia, Wang Fa-Qiang, Lu Yi-Qun, Zhao Feng, Li Ming-Ming, Mi Jing-Long, Liang Rui-Sheng, Liu Song-Hao. A phase modulated QKD system with two quantum cryptography protocols. Acta Physica Sinica, 2007, 56(11): 6434-6440. doi: 10.7498/aps.56.6434
[20]	Chen Jin-Jian, Han Zheng-Fu, Zhao Yi-Bo, Gui You-Zhen, Guo Guang-Can. The effect of balanced homodyne detection on continuous variable quantum key distribution. Acta Physica Sinica, 2007, 56(1): 5-9. doi: 10.7498/aps.56.5

Catalog

Vol. 73, Issue 23 - 2024-12-05

Metrics

Abstract views: 332
PDF Downloads: 12
Cited By: 0

姓名
邮箱
手机号码
标题
留言内容
验证码

Search

Article

留言板

Abstract

Authors and contacts

Corresponding author: Wang Tian-Yi, tywang@gzu.edu.cn

FullText HTML : translate this paragraph

References

Cited By

Catalog

Metrics

Authors

Referees

About Journal

About

Search

Article

留言板

Abstract

Authors and contacts

Corresponding author: Wang Tian-Yi, tywang@gzu.edu.cn

FullText HTML : translate this paragraph

References

Cited By

Catalog

Metrics

Publishing process

Authors

Referees

About Journal

About