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Experimental realization of quantum cryptography communication in free space

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Science china(physics,Mechanics & Astronomy) 2005年第2期48卷 237-246页

作者： wang chuan1, {2. Jingfu1, wang Pingxiao1, DENG Fuguo1, AI Qing1 & long guilu1,2.1. department of physics, Key Laboratory for Quantum Information and Measurements, tsinghua Univer- sity, Beijing 100084, china 2. Center for Atomic and Molecular NanoSciences, {12., Beijing 100084, china department of physics Key Laboratory for Quantum Information and Measurements Tsinghua University Beijing 100084 China Atomic and Molecular NanoSciences Tsinghua University Beijing 100084 China

Utilizing linear optical devices, the principle of B92.quantum key distribution (QKD) protocol is demonstrated in free space with a distance of transmission of 2.2.meters. The faint laser pulses with 650 nm wavelength are used as the single photon sources. The experimental results show that the eavesdropping behavior in the signal transmission can be detected. We also discuss the problems and solutions in using the quantum cryptography communication practically. It is pointed out that one of the approaches to increasing the distance of the quantum communication is to overcome the attenuation of the single photon in transmission. This could not be solved by the use of single photon source, and new quantum communication protocols are needed to solve these problems.

关键词： quantum key distribution, free space, linear optics, faint pulses.

Constructing highly safe and long-life calcium ion batteries based on hydratedvanadium oxide cathodes featuring a pillar structure

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Rare Metals 2024年第6期43卷 2597-2612页

作者： Chun-Fang wang Shi-Wei zhang Lan Huang Yuan-Min Zhu Feng Liu Jian-{2. wang Li-Ming Tan Chun-Yi Zhi Cui-Ping Han Powder Metallurgy Research Institute Central South UniversityChangsha410083China Songshan Lake Materials Laboratory Dongguan 523808China Research Institute of Interdisciplinary Science and School of Materials Science and Engineering Dongguan University of TechnologyDongguan 523808China department of Materials Science and Engineering City University of Hong KongHong Kong 999077China Faculty of Materials Science and Energy Engineering/Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China

Calcium-ion batteries(CIBs)have generated intense interest due to the growing demand for safer,cheaper,and large-scale energy storage ***,their development is still in its infancy,owing to the lack of suitable cathodes for sustaining reversiblc Ca^(2.)intercalation/***,layered H_(2.V_(3)O_(8)(HVO)with Zn^(2.)pre-insertion(ZHVO)is reported as a high-rate and highly durable cathode material for *** existence of Zn^(2.)and H_(2.O pillars could expand the interlayer spacing up to 1.8 nm,which is favorable for the diffusion of bulky Ca^(2.).The formation of Zn-O bonds facilitates electron transfer and enhances electrical ***,the ZHVO cathode achieves superior capacity performance(2.3.9 mAh·g^(-1)at 0.2.A·g^(-1))and long lifespan(78.3%for 1,000 cycles at 5 A·g^(-1))compared to pristine *** functional theory(DFT)calculations revealed that Zn^(2.)moved during Ca^(2.)intercalation,thereby reducing the diffusion energy barrier and facilitating Ca^(2.)***,a safe aqueous calcium ion cell was successfully assembled.

关键词： Multivalent batteries Calcium-ion batteries Layered structure Vanadium oxide Cathode materials

Versatile plant genome engineering using anti-CRISPR-Cas12. systems

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Science china Life Sciences 2024年

作者： Yao He Shishi Liu long Chen Dongkai Pu Zhaohui Zhong Tang Xu Qiurong Ren chuan Dong Yawei {2. Danning {2. Xuelian Zheng Fengbiao Guo Tao zhang Yiping Qi Yong zhang Integrative Science Center of Germplasm Creation in Western china (Chongqing) Science City Chongqing Key Laboratory of Tree Germplasm Innovation and Utilization School of Life Sciences Southwest University department of Biotechnology School of Life Sciences and Technology Center for Informational Biology University of Electronic Science and Technology of China Sichuan Institute of Edible Fungi Sichuan Academy of Agricultural Sciences Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Zhongshan Biological Breeding Laboratory/Key Laboratory of Plant Functional Genomics of the Ministry of Education College of AgricultureYangzhou University Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Jiangsu Key Laboratory of Crop Genetics and Physiology Yangzhou University department of Respiratory and Critical Care Medicine Zhongnan Hospital of Wuhan University Key Laboratory of Combinatorial Biosynthesis and Drug Discovery Ministry of Education and School of Pharmaceutical Sciences Wuhan University department of Plant Science and Landscape Architecture University of Maryland College Park 20742 Institute for Bioscience and Biotechnology Research University of Maryland

CRISPR-Cas12. genome engineering systems have been widely used in plant research and crop breeding. To date, the performance and use of anti-CRISPR-Cas12. systems have not been fully established in plants. Here, we conduct in silico analysis to identify putative anti-CRISPR systems for Cas12.. These putative anti-CRISPR proteins, along with known anti-CRISPR proteins, are assessed for their ability to inhibit Cas12. cleavage activity in vivo and in planta. Among all anti-CRISPR proteins tested, AcrVA1 shows robust inhibition of Mb2.as12. and LbCas12. in E. coli. Further tests show that AcrVA1 inhibits LbCas12. mediated genome editing in rice protoplasts and stable transgenic lines. Impressively, co-expression of AcrVA1 mitigates off-target effects by CRISPR-LbCas12., as revealed by whole genome sequencing. In addition, transgenic plants expressing AcrVA1 exhibit different levels of inhibition to LbCas12. mediated genome editing, representing a novel way of fine-tuning genome editing efficiency. By controlling temporal and spatial expression of AcrVA1, we show that inducible and tissue specific genome editing can be achieved in plants. Furthermore, we demonstrate that AcrVA1 also inhibits LbCas12.-based CRISPR activation(CRISPRa) and based on this principle we build logic gates to turn on and off target genes in plant cells. Together, we have established an efficient anti-CRISPR-Cas12. system in plants and demonstrate its versatile applications in mitigating off-target effects, finetuning genome editing efficiency, achieving spatial-temporal control of genome editing, and generating synthetic logic gates for controlling target gene expression in plant cells.

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Implementation of a multiple round quantum dense coding using nuclear magnetic resonance

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Science china(physics,Mechanics & Astronomy) 2005年第6期48卷 706-715页

作者： zhang Jingfu1, XIE Jingyi2. wang {2., DENG Zhiwei3, LU Zhiheng4, & long guilu1,5 1. Key Laboratory For Quantum Information and Measurements of MOE, department of physics, tsinghua university, Beijing 100084,china 2. department of Materials Science and Engineering, Beijing Normal university, Beijing 100875, china 3. Testing and Analytical Center, Beijing Normal university, Beijing 100875,china 4. department of physics, Beijing Normal university, Beijing 100875, china 5. Key Laboratory For atomic and Molecular Nanosciences, tsinghua university, Beijing 100084,china 1. Key Laboratory For Quantum Information and Measurements of MOE Department of Physics Tsinghua University 100084 Beijing China 2. department of Materials science and Engineering Beijing Normal University 100875 Beijing China 3. Testing and Analytical Center Beijing Normal University 100875 Beijing China 4. department of physics Beijing Normal University 100875 Beijing China 5. Key Laboratory For Atomic and Molecular Nanosciences Tsinghua University 100084 Beijing China

A multiple round quantum dense coding scheme based on the quantum phase estimation algorithm is proposed and implemented in a three qubit nuclear magnetic resonance (NMR) quantum computer. Using an m + 1 qubit system, Bob can transmit one of 2.+1 messages to Alice, through manipulating only one qubit and exchanging it between Alice and Bob for m rounds. The information capacity is enhanced to m + 1 bits as compared to m bits in a classical scheme. The scheme has been demonstrated in NMR system, and the experimental results show a good agreement between theory and experiment.

关键词： quantum dense coding, multiple round, nuclear magnetic resorance

The Nano Research Young Innovators Awards in bio-inspired nanomaterials

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Nano Research 2024年第2期17卷 417-425页

作者： Jun Chen Shuotao wang department of Bioengineering University of CaliforniaLos AngelesLos AngelesCA 90095USA Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China

Nano Research Young Innovators(NR45)Awards are designed to acknowledge and celebrate the achievements of young researchers under 45 years of *** individuals have made significant contributions to the field of nanoscience and *** the inaugural NR45 Awards in 2.18,the journal's editorial board has recognized over a hundred innovators specializing in nanobiotechnology,nano energy,two-dimensional materials,and *** focus of the 2.2. NR45 Awards is on bioinspired nanomaterials,acknowledging thirty-three outstanding young innovators for their extraordinary contributions in developing these materials with applications spanning clean energy,human healthcare,monitoring,and disease treatments,as shown in *** extend our heartfelt congratulations to all the 33 NR45 Awardees in 2.2.!

关键词： journal materials contributions

Grading severity of microscopic vascular invasion was independently associated with recurrence and survival following hepatectomy for solitary hepatocellular carcinoma

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Hepatobiliary Surgery and Nutrition 2024年第1期13卷 16-28页

作者： Lan-Qing Yao Chao Li Yong-Kang Diao Lei Liang Hang-Dong Jia Shi-chuan Tang Yong-Yi Zeng Han Wu Ming-Da wang Li-Hui Gu Timothy MPawlik Wan Yee Lau Cheng-Wu {2. Feng Shen Kui wang Tian Yang department of Hepatobiliary Surgery Eastern Hepatobiliary Surgery HospitalSecond Military Medical University(Navy Medical University)ShanghaiChina department of General Surgery Cancer CenterDivision of Hepatobiliary and Pancreatic SurgeryZhejiang Provincial People’s HospitalAffiliated People’s HospitalHangzhou Medical CollegeHangzhouChina department of Hepatobiliary Surgery Mengchao Hepatobiliary HospitalFujian Medical UniversityFuzhouChina department of Surgery Ohio State UniversityWexner Medical CenterColumbusOHUSA Faculty of Medicine the Chinese University of Hong KongShatinNew TerritoriesHong KongChina Eastern Hepatobiliary Clinical Research Institute Third Affiliated Hospital of Navy Medical UniversityShanghaiChina

Background:Hepatectomy is the preferred treatment for solitary hepatocellular carcinoma(HCC)without macrovascular invasion and distant metastasis,but long-term survival remains unsatisfactory in certain *** sought to identify whether the grading severity of microscopic vascular invasion(MVI)was associated with recurrence and survival among patients with solitary ***:Consecutive patients who underwent hepatectomy for solitary HCC were identified from a multicenter prospectively-collected *** were categorized into three groups according to the MVI grading system proposed by the Liver Cancer Pathology Group of china:M0(no MVI),M1(1-5 sites of MVI occurring≤1.0 cm away from the tumor),and M2.>5 sites occurring≤1.0 cm or any site occurring>1 cm away from the tumor).Recurrence-free survival(RFS)and overall survival(OS)were compared among the ***:Among 2.7 patients,97(42.7%),83(36.6%),and 47(2..7%)patients had M0,M1,and M2.*** RFS rates among patients with M0,M1,and M2.were 38.3,35.1,11.6 months,respectively,while OS rates were 66.8,62.3,30.6 months,respectively(both P2.were independent risk factors for RFS(hazard ratio 1.2.,95%CI:1.03-1.89,P=0.040;and hazard ratio 1.67,95%CI:1.06-2.64,P=0.02.)and OS(hazard ratio 1.2.,95%CI:1.05-2.07,P=0.035;and hazard ratio 1.97,95%CI:1.15-3.38,P=0.013).Conclusions:Grading severity of MVI was independently associated with RFS and OS after hepatectomy for solitary *** surveillance for recurrence and potentially adjuvant therapy may be considered for patients with MVI,especially individuals with more severe MVI grading(M2..

关键词： Hepatocellular carcinoma microscopic vascular invasion recurrence survival hepatectomy

Efficient entanglement purification for doubly entangled photon state

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Science china(Technological Sciences) 2009年第12期52卷 3464-3467页

作者： wang chuan SHENG YuBo LI XiHan DENG FuGuo {2. Wei long guilu School of Science Beijing University of Posts and TelecommunicationsBeijing 100876China Institute of Low Energy Nuclear Physicsand Department of Material Science and EngineeringBeijing Normal UniversityBeijing 100875China department of Electronic Engineering Tsinghua UniversityBeijing 100084China department of physics Tsinghua UniversityBeijing 100084China tsinghua National Laboratory for Information Science and Technology Tsinghua UniversityBeijing 100084China

In this paper,we present an efficient purification scheme that improves the efficiency of entanglement purification of the recently proposed entanglement purification scheme for doubly entangled photon states (***.A,2.08,77:042.15).This modified scheme contains the bit-flip error correction where all the photon pairs can be kept while all the bit-flip errors are corrected and the entanglement purification of phase-flip errors where a wavelength conversion process is *** scheme has the advantage of high efficiency and a much lower minimum fidelity of the original *** works under existing technology.

关键词： entanglement purification doubly entangled photon state quantum communication

The FAST all sky HI survey(FASHI):The first release of catalog

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Science china(physics,Mechanics & Astronomy) 2024年第1期67卷 112-133页

作者： chuan-Peng zhang Ming Zhu Peng Jiang Cheng Cheng Jing {2. Jie {2. Jin-long Xu Xiao-Lan Liu Nai-Ping Yu Lei Qian Haiyang Yu Mei Ai Yingjie Jing Chen Xu Ziming Liu Xin Guan Chun Sun Qingliang Yang Menglin Huang Qiaoli Hao FAST Collaboration Guizhou Radio Astronomical Observatory Guizhou UniversityGuiyang 550000China National Astronomical Observatories Chinese Academy of Sciences(CAS)Beijing 100101China Chinese Academy of Sciences South America Center for Astronomy National Astronomical ObservatoriesCASBeijing 100101China Kavli Institute for Astronomy and Astrophysics Peking UniversityBeijing 100871China

The FAST All Sky HI survey(FASHI)was designed to cover the entire sky observable by the Five-hundred-meter Aperture Spherical radio Telescope(FAST),spanning approximately 2.000 square degrees of declination between-14°and+66°,and in the frequency range of 1050-1450 MHz,with the expectation of eventually detecting more than 100000 HI *** August 2.2. and June 2.2.,FASHI had covered more than 7600 square degrees,which is approximately 35%of the total sky observable by *** has a median detection sensitivity of around 0.76 m Jy beam-1and a spectral line velocity resolution of~6.4 km s-1at a frequency of~1.4 *** of now,a total of 41741 extragalactic HI sources have been detected in the frequency range 1305.5-1419.5 MHz,corresponding to a redshift limit of z■*** cross-matching FASHI sources with the Siena Galaxy Atlas(SGA)and the Sloan Digital Sky Survey(SDSS)catalogs,we found that 16972.40.7%)sources have spectroscopic redshifts and 10975(2..3%)sources have only photometric *** of the remaining 13794(33.0%)HI sources are located in the direction of the Galactic plane,making their optical counterparts difficult to identify due to high extinction or high contamination of Galactic stellar *** on current survey results,the FASHI survey is an unprecedented blind extragalactic H I *** has higher spectral and spatial resolution and broader coverage than the Arecibo Legacy Fast ALFA Survey(ALFALFA).When completed,FASHI will provide the largest extragalactic HI catalog and an objective view of HI content and large-scale structure in the local universe.

关键词： surveys redshifts galaxies telescope radio lines HI line

Targeted trace ingredients coupled with chemometric analysis for consistency evaluation of Panax notoginseng saponins injectable formulations

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中国天然药物:英文版 2023年第8期21卷 631-640页

作者： zhang Jingxian zhang Zijia {2. Zhaojun zhang Tengqian ZHOU Yang CHEN Ming HUANG Zhanwen HE Qingqing long Huali HOU Jinjun WU wanying GUO Dean National Engineering Research Center of TCM Standardization Technology Shanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China NMPA Key Laboratory for Quality Control of Traditional Chinese Medicine Shanghai Institute for Food and Drug ControlShanghai 201203China Guangxi Key Laboratory of Comprehensive Utilization Technology of Pseudo-Ginseng Guangxi Zhongheng Innovative Pharmaceutical Research Co.Ltd.Guangxi 530032China School of Pharmacy University of Chinese Academy of SciencesBeijing 100049China

Evaluating the consistency of herb injectable formulations could improve their product quality and clinical safety,particularly concerning the composition and content levels of trace *** notoginseng Saponins Injection(PNSI),widely used in china for treating acute cardiovascular diseases,contains low-abundance(10%-2.%)and trace saponins in addition to its five main constituents(notoginsenoside R1,ginsenoside Rg1,ginsenoside Re,ginsenoside Rb1,and ginsenoside Rd).This study aimed to establish a robust analytical method and assess the variability in trace saponin levels within PNSI from different vendors and formulation *** achieve this,a liquid chromatography-triple quadrupole mass spectrometry(LC-MS/MS)method employing multiple ions monitoring(MIM)was developed.A“post-column valve switching”strategy was implemented to eliminate highly abundant peaks(NR_(1),Rg_(1),and Re)at 2. min.A total of 51 saponins in PNSI were quantified or relatively quantified using 18 saponin standards,with digoxin as the internal *** study evaluated 119 batches of PNSI from seven vendors,revealing significant variability in trace saponin levels among different vendors and formulation *** findings highlight the importance of consistent content in low-abundance and trace saponins to ensure product control and clinical *** of these ingredients is crucial for maintaining the quality and effectiveness of PNSI in treating acute cardiovascular diseases.

关键词： Consistency evaluation Panax notoginseng saponins PCA analysis Xueshuantong Xuesaitong