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Reference-frame-independent quantum key distribution with an untrusted source

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Chinese Physics B 2020年第3期29卷 82-88页

作者： jia-ji li Yang Wang Hong-Wei li Wan-Su Bao Henan Key Laboratory of Quantum Information and Cryptography SSF IEUZhengzhou 450001China Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China

Reference frame independent quantum key distribution(RFI-QKD) allows two legitimate parties to share the common secret keys with the drift of reference frames. In order to reduce the actual requirements of RFI-QKD protocol on light source and make it more suitable for practical applications, this paper gives a specific description of RFI-QKD protocol with an untrusted source and analyzes the practical security of this protocol based on the two-way "plug and play" structure commonly used in practical systems. In addition, we also investigate the performance of RFI-QKD with an untrusted source considering statistical fluctuations based on Chernoff bound. Using simulations, we compare the secret key rate of RFIQKD with an untrusted source to RFI-QKD with trusted source. The results show that the performance of RFI-QKD with an untrusted source is similar to that of RFI-QKD with trusted source, and the finite data size clearly effects the performance of our protocol.

关键词： quantum key distribution reference frame independent finite key untrusted source

A Construction of Authentication Codes with Arbitration from Vector Spaces over Finite Fields

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Journal of Mathematical Research and Exposition 2011年第2期31卷 269-278页

作者： Wei jia li ji Zhu NAN School of Mathematical Sciences Dalian University of Technology Liaoning 116024 P. R. China

This paper is devoted to constructing an authentication code with arbitration using subspaces of vector spaces over finite ***,if we choose the encoding rules of the transmitter and the decoding rules of the receiver according to a uniform probability distribution,then some parameters and the probabilities of successful attacks are computed.

关键词： authentication code with arbitration vector space finite field

Asymmetric twin-field quantum key distribution with both statistical and intensity fluctuations

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Communications in Theoretical Physics 2020年第6期72卷 37-42页

作者： Shao-Fu He Yang Wang jia-ji li Wan-Su Bao Henan Key Laboratory of Quantum Information and Cryptography SSF IEUZhengzhouHenan 450001China Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of ChinaHefeiAnhui 230026China

Twin-field quantum key distribution(TF-QKD)is a disruptive innovation which is able to overcome the rate-distance limit of QKD without trusted *** the proposal of the first TF-QKD protocol,theoretical and experimental breakthroughs have been made to enhance its ***,there still exist some practical issues waiting for *** this paper,we examine the performances of asymmetric TF-QKD protocol with unstable light sources and limited data *** statistical fluctuations of the parameters are estimated employing Azuma’s *** numerical simulations,we compare the secret key rates of the asymmetric TF-QKD protocol with different data sizes and variant intensity fluctuation *** results demonstrate that both statistical and intensity fluctuations have significant impacts on the performance of asymmetric TF-QKD.

关键词： twin-field quantum key distribution asymmetrical losses statistical fluctuations intensity fluctuations

Two-step method for creating a gastric tube during laparoscopic-thoracoscopic Ivor-Lewis esophagectomy

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World Journal of Gastroenterology 2017年第45期23卷 8035-8043页

作者： yu liu ji-jia li peng zu hong-xu liu zhan-wu yu yi ren Department of Thoracic Surgery Cancer Hospital of China Medical University/Liaoning Cancer Hospital and Institute

AIM To introduce a two-step method for creating a gastric tube during laparoscopic-thoracoscopic Ivor-Lewis esophagectomy and assess its clinical *** One hundred and twenty-two patients with middle or lower esophageal cancer who underwent laparoscopicthoracoscopic Ivor-Lewis esophagectomy at liaoning Cancer Hospital and Institute from March 2014 to March 2016 were included in this study,and divided into two groups based on the procedure used for creating a gastric tube. One group used a two-step method for creating a gastric tube,and the other group used the conventional method. The two groups were compared regarding the operating time,surgical complications,and number of stapler cartridges *** The mean operating time was significantly shorter in the two-step method group than in the conventional method group [238(179-293) min vs 272(189-347) min,P lications [14(21.9%) vs 13(22.4%),P= 0.55] or mean number of stapler cartridges used [5(4-6) vs 5.2(5-6),P = 0.007] between the two *** The two-step method for creating a gastric tube during laparoscopic-thoracoscopic Ivor-Lewis esophagectomy has the advantages of simple operation,minimal damage to the tubular stomach,and reduced use of stapler cartridges.

关键词： Minimally invasive srugery Gastric tube Ivor-Lewis esophagectomy

Security of quantum key distribution with virtual mutually unbiased bases

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Science China(Physics,Mechanics & Astronomy) 2024年第7期67卷 13-21页

作者： Hong-Wei li Chen-Peng Hao Zhi-jiang Chen li Gong Yi-Fei Lu Yang Wang jia-ji li Chun-Mei Zhang Rong Wang Zhen-Qiang Yin Qing-Yu Cai Henan Key Laboratory of Quantum Information and Cryptography SSF IEUZhengzhou 450000China Institute of Quantum Information and Technology Nanjing University of Posts and TelecommunicationsNanjing 210003China Department of Physics University of Hong KongHong Kong 999077China Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China School of Information and Communication Engineering Hainan UniversityHaikou 570228China

In a perfect quantum key distribution(QKD)protocol,quantum states should be prepared and measured with mutually unbiased bases(MUBs).However,in a practical QKD system,quantum states are generally prepared and measured with imperfect MUBs using imperfect devices,possibly reducing the secret key rate and transmission *** analyze the security of a QKD system with imperfect MUBs,we propose virtual MUBs to characterize the quantum channel against collective attack,and analyze the corresponding secret key rate under imperfect state preparation and measurement *** generally,we apply the advantage distillation method for analyzing the security of QKD with imperfect MUBs,where the error tolerance and transmission distance can be sharply *** analysis method can be applied to benchmark and standardize a practical QKD system,elucidating the security analysis of different QKD protocols with imperfect devices.

关键词： quantum key distribution mutually unbiased bases advantage distillation

Blood neutrophil-lymphocyte ratio predicts survival after hepatectomy for hepatocellular carcinoma: A propensity score-based analysis

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World Journal of Gastroenterology 2016年第21期22卷 5088-5095页

作者： Hao-jie Yang Zhe Guo Yu-Ting Yang jing-Hang jiang Ya-Peng Qi ji-jia li Le-Qun li Bang-De Xiang Department of Hepatobiliary Surgery Affiliated Tumor Hospital of Guangxi Medical University Nanning 530021 Guangxi Zhuang Autonomous Region China Department of General Surgery the First People's Hospital of Changde Changde 415000 Hunan Province China Department of Oncology the First People's Hospital of Changde Changde 415000 Hunan Province China Department of Thyroid and Breast Surgery Central Hospital of Wuhan Wuhan 430000 Hubei Province China Department of General Surgery Second People's Hospital of Jingmen Jingmen 448000 Hubei Province China Guangxi Medical University Nanning 530021 Guangxi Zhuang Autonomous Region China

AIM: To investigate whether an elevated preoperative neutrophil-to-lymphocyte ratio(NLR) can predict poor survival in patients with hepatocellular carcinoma(HCC).METHODS: We retrospectively reviewed 526 patients with HCC who underwent surgery between 2004 and ***: Preoperative NLR ≥ 2.81 was an independent predictor of poor disease-free survival(DFS, P < 0.001) and overall survival(OS, P = 0.044). Compared with patients who showed a preoperative NLR < 2.81 and postoperative increase, patients who showed preoperative NLR ≥ 2.81 and postoperative decrease had worse survival(DFS, P < 0.001; OS, P < 0.001). Among patients with preoperative NLR ≥ 2.81, survival was significantly higher among those showing a postoperative decrease in NLR than among those showing an increase(DFS, P < 0.001; OS, P < 0.001). When elevated, alpha-fetoprotein(AFP) provided no prognostic information, and so preoperative NLR ≥ 2.81 may be a good complementary indicator of poor OS whenever AFP levels are low or ***: Preoperative NLR ≥ 2.81 may be an indicator of poor DFS and OS in patients with HCC undergoing surgery. Preoperative NLR ≥ 2.81 may be a good complementary indicator of poor OS when elevated AFP levels provide no prognostic information.

关键词： Blood neutrophil-to-lymphocyte ratio Hepatocellular carcinoma liver resection Prognosis Postoperative change in neutrophil-to-lymphocyte ratio

Role of PFKFB3 and CD163 in Oral Squamous Cell Carcinoma Angiogenesis

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Current Medical Science 2019年第3期39卷 410-414页

作者： ji-jia li Xiao-he MAO Tian TIAN Wei-ming WANG Tong SU Can-hua jiaNG Chuan-yu HU Department of Oral and Maxillofacial Surgery Xiangya Hospital of Central South UniversityChangsha 410008China Center of Stomatology Tongji Hospital Tongji Medical College Huazhong University of Science and TechnologyWuhan 430030 China

6-phosphofructo-2-kinase/fructose-2, 6-biphosphatase 3 (PFKFB3), an enzyme producing fructose 2, 6-bisphosphate (F-2, 6-BP), serves as a switch to activate phosphofructokinase-1, and is a critical enzyme for endothelial glycolysis, mediating circadian control of carcinogenesis. Also, tumor-associated macrophages (TAMs) play an important role in the progression and prognosis of numerous cancers. However, the role and clinical significance of PFKFB3 and TAMs in oral squamous cell carcinoma (OSCC) have not been elucidated. The present study was designed to investigate the correlation between PFKFB3 expression, CD 163+ TAMs infiltration and tumor angiogenesis in OSCC by tissue microarray. Tissue microarrays containing 117 OSCC specimens and 56 matched paracarcinoma tissues were studied by immunohistochemistry. The expression levels of PFKFB3, CD163 and CD31 were significantly increased in OSCC specimens as compared with normal oral mucosa (P<0.05), and PFKFB was significantly correlated with tumor differentiation and tumor size (P<0.05), and CD 163 was significantly correlated with areca nut chewing habit among OSCC tissues (P<0.05). Furthermore, Pearson's correlation analysis revealed that PFKFB3 was significantly correlated with both CD 163 and CD31 (P<0.05), meanwhile CD 163 was significantly correlated with CD31 (P<0.001), suggesting PFKFB3 may promote angiogenesis in tumor progression and metastases by regulating CD 163+ TAMs infiltration in OSCC.

关键词： 6-phosphofructo-2-kinase/fructose-2,6-biphosphatase 3 angiogenesis CD163 CD31

Reference-frame-independent quantum key distribution with two-way classical communication

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Chinese Physics B 2024年第10期33卷 146-152页

作者： Chun Zhou Hai-Tao Wang Yi-Fei Lu Xiao-Lei jiang Yan-Mei Zhao Yu Zhou Yang Wang jia-ji li Yan-Yang Zhou Xiang Wang Hong-Wei li Wan-Su Bao Henan Key Laboratory of Quantum Information and Cryptography SSF IEUZhengzhou 450001China

The data post-processing scheme based on two-way classical communication(TWCC)can improve the tolerable bit error rate and extend the maximal transmission distance when used in a quantum key distribution(QKD)*** this study,we apply the TWCC method to improve the performance of reference-frame-independent quantum key distribution(RFI-QKD),and analyze the influence of the TWCC method on the performance of decoy-state RFI-QKD in both asymptotic and non-asymptotic *** numerical simulation results show that the TWCC method is able to extend the maximal transmission distance from 175 km to 198 km and improve the tolerable bit error rate from 10.48%to 16.75%.At the same time,the performance of RFI-QKD in terms of the secret key rate and maximum transmission distance are still greatly improved when statistical fluctuations are *** conclude that RFI-QKD with the TWCC method is of practical interest.

关键词： quantum key distribution reference-frame-independent two-way classical communication

DESIGN AND TEST OF AN IMPROVED SCHEME FOR GLOBAL SPECTRAL MODEL WITH REDUCED TRUNCATION ERROR

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Chinese Science Bulletin 1989年第2期34卷 150-154页

作者：陈嘉滨纪立人吴万里 Institute of Atmospheric Physics Academia Sinica Beijng

Ⅰ. INTRODUCTIONA scheme suitable for the effects of large scale orography is designed and tested. In the improved scheme a reference atmosphere which is only a function of pressure p is introduced in the governing eq... 详细信息

关键词： spectral model orography truncation error.