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193篇 您的检索式:作者名="Jonathan Li"
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1Petawatt and exawatt class lasers worldwide显示文摘In the 2015 review paper‘Petawatt Class Lasers Worldwide’a comprehensive overview of the current status of highpower facilities of>200 TW was presented.This was largely based on facility specifications,with some description of their uses,for instance in fundamental ultra-high-intensity interactions,secondary source generation,and inertial confinement fusion(ICF).With the 2018 Nobel Prize in Physics being awarded to Professors Donna Strickland and Gerard Mourou for the development of the technique of chirped pulse amplification(CPA),which made these lasers possible,we celebrate by providing a comprehensive update of the current status of ultra-high-power lasers and demonstrate how the technology has developed.We are now in the era of multi-petawatt facilities coming online,with 100 PW lasers being proposed and even under construction.In addition to this there is a pull towards development of industrial and multi-disciplinary applications,which demands much higher repetition rates,delivering high-average powers with higher efficiencies and the use of alternative wavelengths:mid-IR facilities.So apart from a comprehensive update of the current global status,we want to look at what technologies are to be deployed to get to these new regimes,and some of the critical issues facing their development.Colin N.Danson Constantin Haefner Jake Bromage Thomas Butcher Jean-Christophe FChanteloup Enam A.Chowdhury Almantas Galvanauskas Leonida A.Gizzi Joachim Hein David I.Hillier Nicholas W.Hopps Yoshiaki Kato Efim A.Khazanov Ryosuke Kodama Georg Korn Ruxin Li Yutong Li Jens Limpert Jingui Ma Chang Hee Nam David Neely Dimitrios Papadopoulos Rory R.Penman Liejia Qian Jorge J.Rocca andrey A.Shaykin Craig W.Siders Christopher Spindloe Sándor Szatmári Raoul M.G.M.Trines Jianqiang Zhu Ping Zhu Jonathan D.Zuegel 2019High Power Laser Science and Engineering2019,7,3:33
2Identification of coastal wetlands of international importance for waterbirds:a review of China Coastal Waterbird Surveys 2005–2013显示文摘Background:China's coastal wetlands belong to some of the most threatened ecosystems worldwide.The loss and degradation of these wetlands seriously threaten waterbirds that depend on wetlands.Methods:The China Coastal Waterbird Census was organized by volunteer birdwatchers in China's coastal region.Waterbirds were surveyed synchronously once every month at 14 sites,as well as irregularly at a further 18 sites,between September 2005 and December 2013.Results:A total of 75 species of waterbirds met the 1 % population level Ramsar listing criterion at least once at one site.The number of birds of the following species accounted for over 20 % of the total flyway populations at a single site:Mute Swan(Cygnus olor),Siberia Crane(Grus leucogeranus),Far Eastern Oystercatcher(Haematopus osculans),Bar-tailed Godwit(Limosa lapponica),Spotted Greenshank(Tringa guttifer),Great Knot(Calidris tenuirostris),Spoon-billed Sandpiper(Calidris pygmeus),Saunders' s Gull(Larus saundersi),Relict Gull(Larus relictus),Great Cormorant(Phalacrocorax carbo),Eurasian Spoonbill(Platalea leucorodia),Black-faced Spoonbill(Platalea minor) and Dalmatian Pelican(Pelecanus crispus).A total of 26 sites supported at least one species of which their number met the1 % criterion.Forty-two species met the 1 % criterion in the Yellow River Delta,Shandong;29 at the Cangzhou coast,Hebei and 26 species at the Lianyungang coast,Jiangsu.Conclusions:The results highlight the international importance of China's coastal wetlands for waterbirds.This study also demonstrates that participation of local birdwatchers in waterbird surveys results in data that are invaluable not only for understanding the current status of waterbirds in China's coastal regions but also for waterbird conservation and management.Qingquan Bai Jianzhong Chen Zhihong Chen Guotai Dong Jiangtian Dong Wenxiao Dong Vivian Wing Kan Fu Yongxiang Han Gang Lu Jing Li Yang Liu Zhi Lin Derong Meng Jonathan Martinez Guanghui Ni Kai Shan Renjie Sun Suixing Tian Fengqin Wang Zhiwei Xu Yat-tung Yu Jin Yang Zhidong Yang Lin Zhang Ming Zhang Xiangwu Zeng 2015Chinese Birds2015,,3:20
3Pm21 from Haynaldia villosa Encodes a CC-NBS- LRR Protein Conferring Powdery Mildew Resistance in Wheat显示文摘Liping Xing Ping Hu Jiaqian Liu Kamil Witek Shuang Zhou Jiefei Xu Weihao Zhou Li Gao Zhenpu Huang Ruiqi Zhang Xiue Wang Peidu Chen Haiyan Wang Jonathan D.G. Jones Miroslava Karafiatova Jan Vrana Jan Baros Jaroslav Dolezel Yuanchun Tian Yufeng Wu Aizhong Cao 2018Molecular Plant2018,11,6:16
4Effects of Slope Aspects on Soil Bacterial and Arbuscular Fungal Communities in a Boreal Forest in China显示文摘在 forested 环境的土壤 biogeochemical 性质和植物社区上的斜坡方面的效果广泛地被学习了;然而,倾斜对的方面影响大部分玷污微生物引起的社区遗体 unexamined,尽管有在生态系统工作的土壤生物区系的中央角色。在这研究,土壤细菌和 arbuscular mycorrhizal 真菌(AMF ) 的社区在更大的 Khingan 山的一个北方的森林里为斜坡方面(面对南方的方面,面对北方的方面和扁平的区域) 的三种类型用标注 pyrosequencing 被调查,中国。细菌并且 AMF 社区作文与斜坡方面不同。细菌的差异在面对北方的方面上是最低的,并且 AMF 差异在扁平的区域上是最低的。方面也在土壤 pH 和可得到的磷(P) 和灌木状的生物资源上有重要影响。土壤 pH 和 understory 灌木生物资源显著地与细菌的社区被相关,并且玷污可得到的 P 和灌木生物资源与 AMF 社区的显示出的重要关联。我们的结果建议了那个斜坡细菌的影响的方面和 AMF 社区,在植物社区和土壤化学药品性质由导致方面的变化调停了(例如, pH 和可得到的 P ) ,它在森林斜坡方面的效果上改进了知识在上未葬、地下社区。CHU Haiyan XIANG Xingjia YANG Jian Jonathan M. ADAMS ZHANG Kaoping LI Yuntao SHI Yu 2016Pedosphere2016,26,2:15
5Platelets generated from human embryonic stem cells are functional in vitro and in the microcirculation of living mice显示文摘Shi-Jiang Lu Feng Li Hong Yin Qiang Feng Erin A Kimbrel Eunsil Hahm Jonathan N Thon Wei Wang Joseph E ltaliano Jaehyung Cho Robert Lanza 2011Cell Research2011,21,3:14
6Spatio-temporal patterns of satellite-derived grassland vegetation phenology from 1998 to 2012 in Inner Mongolia, China显示文摘Spatio-temporal variations of vegetation phenology, e.g. start of green-up season(SOS) and end of vegetation season(EOS), serve as important indicators of ecosystems. Routinely processed products from remotely sensed imagery, such as the normalized difference vegetation index(NDVI), can be used to map such variations. A remote sensing approach to tracing vegetation phenology was demonstrated here in application to the Inner Mongolia grassland, China. SOS and EOS mapping at regional and vegetation type(meadow steppe, typical steppe, desert steppe and steppe desert) levels using SPOT-VGT NDVI series allows new insights into the grassland ecosystem. The spatial and temporal variability of SOS and EOS during 1998–2012 was highlighted and presented, as were SOS and EOS responses to the monthly climatic fluctuations. Results indicated that SOS and EOS did not exhibit consistent shifts at either regional or vegetation type level; the one exception was the steppe desert, the least productive vegetation cover, which exhibited a progressive earlier SOS and later EOS. Monthly average temperature and precipitation in preseason(February, March and April) imposed most remarkable and negative effects on SOS(except for the non-significant impact of precipitation on that of the meadow steppe), while the climate impact on EOS was found to vary considerably between the vegetation types. Results showed that the spatio-temporal variability of the vegetation phenology of the meadow steppe, typical steppe and desert steppe could be reflected by the monthly thermal and hydrological factors but the progressive earlier SOS and later EOS of the highly degraded steppe desert might be accounted for by non-climate factors only, suggesting that the vegetation growing period in the highly degraded areas of the grassland could be extended possibly by human interventions.SHA Zongyao ZHONG Jialin BAI Yongfei TAN Xicheng Jonathan LI 2016Journal of Arid Land2016,8,3:13
7基于AMSR-E与MODIS数据的新疆土壤水分协同反演与验证显示文摘针对当前遥感在大范围土壤水分估算中面临的问题,提出将被动微波遥感数据与光学/热红外遥感数据在模型中协同反演陆表土壤水分的新方法:利用MODIS的光学与热红外波段反演土壤水分的基准值;利用AMSR-E传感器的X波段反演土壤水分的日变化量,然后集成二者建立土壤水分协同反演模型。以新疆为实验区,采用在典型地区获取的365个土壤水分实测值,对该模型进行了验证与精度分析。结果表明,协同反演模型的估算结果与地面实测值之间有着更好的相关性和较小的均方根误差,明显优于单一数据源或单一模型的反演结果。张显峰 赵杰鹏 包慧漪 Li Jonathan 2012土壤学报2012,49,2:13
8Calcium signaling and T-type calcium channels in cancer cell cycling显示文摘Regulation of intracellular calcium is an important signaling mechanism for cell proliferation in both normal and cancerous cells. In normal epithelial cells, free calcium concentration is essential for cells to enter and accomplish the S phase and the M phase of the cell cycle. In contrast, cancerous cells can pass these phases of the cell cycle with much lower cytoplasmic free calcium concentrations, indicating an alternative mechanism has developed for fulfilling the intracellular calcium requirement for an increased rate of DNA synthesis and mitosis of fast replicating cancerous cells. The detailed mechanism underlying the altered calcium loading pathway remains unclear; however, there is a growing body of evidence that suggests the T-type Ca2+ channel is abnormally expressed in cancerous cells and that blockade of these channels may reduce cell proliferation in addition to inducing apoptosis. Recent studies also show that the expression of T-type Ca2+ channels in breast cancer cells is proliferation state dependent, i.e. the channels are expressed at higher levels during the fast-replication period, and once the cells are in a non-proliferation state, expression of this channel isminimal. Therefore, selectively blocking calcium entry into cancerous cells may be a valuable approach for preventing tumor growth. Since T-type Ca2+ channels are not expressed in epithelial cells, selective T-type Ca2+ channel blockers may be useful in the treatment of certain types of cancers.James T Taylor Xiang-Bin Zeng Jonathan E Pottle Kevin Lee Alun R Wang Stephenie G Yi lennifer A S Scruggs Suresh S Sikka Ming Li 2008World Journal of Gastroenterology2008,14,32:12
9A miR-130a-YAP positive feedback loop promotes organ size and tumorigenesis显示文摘Shuying Shen Xiaocan Guo Huan Yan Yi Lu Xinyan Ji Li Li Tingbo Liang Dawang Zhou Xin-Hua Feng Jonathan C Zhao Jindan Yu Xing-Guo Gong Lei Zhang Bin Zhao 2015Cell Research2015,25,9:10
10Assessing the impacts of human activities and climate variations on grassland productivity by partial least squares structural equation modeling(PLS-SEM)显示文摘The cause-effect associations between geographical phenomena are an important focus in ecological research. Recent studies in structural equation modeling(SEM) demonstrated the potential for analyzing such associations. We applied the variance-based partial least squares SEM(PLS-SEM) and geographically-weighted regression(GWR) modeling to assess the human-climate impact on grassland productivity represented by above-ground biomass(AGB). The human and climate factors and their interaction were taken to explain the AGB variance by a PLS-SEM developed for the grassland ecosystem in Inner Mongolia, China. Results indicated that 65.5% of the AGB variance could be explained by the human and climate factors and their interaction. The case study showed that the human and climate factors imposed a significant and negative impact on the AGB and that their interaction alleviated to some extent the threat from the intensified human-climate pressure. The alleviation may be attributable to vegetation adaptation to high human-climate stresses, to human adaptation to climate conditions or/and to recent vegetation restoration programs in the highly degraded areas. Furthermore, the AGB response to the human and climate factors modeled by GWR exhibited significant spatial variations. This study demonstrated that the combination of PLS-SEM and GWR model is feasible to investigate the cause-effect relation in socio-ecological systems.SHA Zongyao XIE Yichun TAN Xicheng BAI Yongfei LI Jonathan LIU Xuefeng 2017Journal of Arid Land2017,9,4:8
11INT-767 improves histopathological features in a dietinduced ob/ob mouse model of biopsy-confirmed nonalcoholic steatohepatitis显示文摘AIM To characterize the efficacy of the dual FXR/TGR5 receptor agonist INT-767 upon histological endpoints in a rodent model of diet-induced and biopsy-confirmed non-alcoholic steatohepatitis(NASH).METHODS The effects of INT-767 on histological features of NASH were assessed in two studies using Lep^(ob/ob)(ob/ob) NASH mice fed the AMLN diet(high fat with transfat, cholesterol and fructose). In a proof-of-conceptstudy, Lep^(ob/ob)(ob/ob) NASH mice were first dosed with INT-767(3 or 10 mg/kg for 8 wk). A second ob/ob NASH study compared INT-767(3 and 10 mg/kg) to obeticholic acid(OCA)(10 or 30 mg/kg; 16 wk). Primary histological endpoints included qualitative and quantitative assessments of NASH. Other metabolic and plasma endpoints were also assessed. A comparative assessment of INT-767 and OCA effects on drug distribution and hepatic gene expression was performed in C57 Bl/6 mice on standard chow. C57 Bl/6 mice were orally dosed with INT-767 or OCA(1-30 mg/kg) for 2 wk, and expression levels of candidate genes were assessed by RNA sequencing and tissue drug levels were measured by liquid chromatography tandem-mass spectrometry.RESULTS INT-767 dose-dependently(3 and 10 mg/kg, PO, QD, 8 wk) improved qualitative morphometric scores on steatohepatitis severity, inflammatory infiltrates and fibrosis stage. Quantitative morphometric analyses revealed that INT-767 reduced parenchymal collagen area, collagen fiber density, inflammation(assessed by Galectin-3 immunohistochemistry) and hepatocyte lipid droplet area following INT-767 treatment. In a comparative study(16 wk), the FXR agonists OCA(10 and 30 mg/kg) and INT-767(3 and 10 mg/kg) both improved NASH histopathology, with INT-767 exerting greater therapeutic potency and efficacy than OCA. Mechanistic studies suggest that both drugs accumulate similarly within the liver and ileum, however, the effects of INT-767 may be driven by enhanced hepatic, but not ileal, FXR function. CONCLUSION These findings confirm the potential utility of FXR and dual FXR/TGR5 activation as disease intervention strategies in NASH.Jonathan D Roth Michael Feigh Sanne S Veidal Louise KD Fensholdt Kristoffer T Rigbolt Henrik H Hansen Li C Chen Mathieu Petitjean Weslyn Friley Niels Vrang Jacob Jelsing Mark Young 2018World Journal of Gastroenterology2018,24,2:7
12Exposure to inorganic arsenic can lead to gut microbe perturbations and hepatocellular carcinoma显示文摘Arsenic is a carcinogenic environmental factor found in food and drinking water around the world.The mechanisms in which arsenic alters homeostasis are not fully understood.Over the past few decades,light has been shed on varying mechanisms in which arsenic induces cancer.Such mechanisms include gut microbe perturbations,genotoxic effects,and epigenetic modification.Gut microbe perturbations have been shown to increase the level of pathogen-associated molecular patterns such as lipopolysaccharide(LPS) leading to uncontained inflammation.Increase in inflammation is the major factor in cirrhosis leading to hepatocellular carcinoma.Alterations in gut permeability and metabolites have also been observed as a fallout of arsenic induced gut microbe modification.The guts proximity and interaction through portal flow make the liver susceptible to gut perturbations and ensuing inflammatory responses.Genotoxic and epigenetic dysregulation induced by arsenic and its toxic metabolites present a more direct mechanism that works synergistically with gut microbe perturbations to induce the incidence of cancers.These pathways combined could be some of the main causes of arsenic-induced carcinogenesis.Jonathan Choiniere Li Wang 2016Acta Pharmaceutica Sinica B2016,6,5:6
13Orbital-scale Asian summer monsoon variations:Paradox and exploration显示文摘The Asian summer monsoon(ASM) is a vast climate system, whose variability is critical to the livelihoods of billions of people across the Asian continent. During the past half-century, much progress has been made in understanding variations on a wide range of timescales, yet several significant issues remain unresolved. Of note are two long-standing problems concerning orbital-scale variations of the ASM.(1) Chinese loess magnetic susceptibility records show a persistent glacial-interglacial dominated ~100 kyr(thousand years) periodicity, while the cave oxygen-isotope(δ18 O) records reveal periodicity in an almost pure precession band(~20 kyr periodicity)—the 'Chinese 100 kyr problem'.(2) ASM records from the Arabian Sea and other oceans surrounding the Asian continent show a significant lag of 8–10 kyr to Northern Hemisphere summer insolation(NHSI), whereas the Asian cave δ18 O records follow NHSI without a significant lag—a discrepancy termed the 'sea-land precession-phase paradox'. How can we reconcile these differences? Recent and more refined model simulations now provide spatial patterns of rainfall and wind across the precession cycle, revealing distinct regional divergences in the ASM domain, which can well explain a large portion of the disparities between the loess, marine, and cave proxy records. Overall, we also find that the loess, marine, and cave records are indeed complementary rather than incompatible, with each record preferentially describing a certain aspect of ASM dynamics. Our study provides new insight into the understanding of different hydroclimatic proxies and largely reconciles the 'Chinese 100 kyr problem' and 'sea-land precession-phase paradox'.Hai CHENG Haiwei ZHANG Yanjun CAI Zhengguo SHI Liang YI Chenglong DENG Qingzhen HAO Youbing PENG Ashish SINHA Hanying LI Jingyao ZHAO Ye TIAN Jonathan BAKER Carlos PEREZ-MEJIAS 2021Science China Earth Sciences2021,64,4:6
14基于多传感器数据的新疆太阳辐射估算及其时空分布特征分析显示文摘融合由Terra/MODIS与FY-3卫星数据反演得到的气溶胶产品,利用基于大气辐射传输原理建立的地面太阳直射辐射的反演模型,计算了2011年新疆地区的逐时太阳直射辐射分布状况。然后,选择乌鲁木齐、阿勒泰、喀什、和田与哈密5个气象站为代表,分析了新疆地区太阳辐射资源的年度时空分布特征。结果表明:利用多遥感传感器数据能较好地反演新疆地区的太阳直射辐射,东疆的直射辐射最强,新疆北部次之,新疆西南部与中部相对较弱,且随季节变化特征明显,表现为夏>春>秋>冬,最高值一般出现在夏季的6月或7月,最低值为12月。刘羽 张显峰 Jonathan Li 吕扬 2015干旱区资源与环境2015,29,3:6
15UFMylation of RPL26 links translocation-associated quality control to endoplasmic reticulum protein homeostasis显示文摘Protein biogenesis at the endoplasmic reticulum(ER)in eukaryotic cells is monitored by a protein quality control system named ER-associated protein degradation(ERAD).While there has been substantial progress in understanding how ERAD eliminates defective polypeptides generated from erroneous folding,how cells remove nascent chains stalled in the translocon during co-translational protein insertion into the ER is unclear.Here we show that ribosome stalling during protein translocation induces the attachment of UFM1,a ubiquitin-like modifier,to two conserved lysine residues near the COOH-terminus of the 60S ribosomal subunit RPL26(uL24)at the ER.Strikingly,RPL26 UFMylation enables the degradation of stalled nascent chains,but unlike ERAD or previously established cytosolic ribosome-associated quality control(RQC),which uses proteasome to degrade their client proteins,ribosome UFMylation promotes the targeting of a translocation-arrested ER protein to lysosomes for degradation.RPL26 UFMylation is upregulated during erythroid differentiation to cope with increased secretory flow,and compromising UFMylation impairs protein secretion,and ultimately hemoglobin production.We propose that in metazoan,co-translational protein translocation into the ER is safeguarded by a UFMylation-dependent protein quality control mechanism,which when impaired causes anemia in mice and abnormal neuronal development in humans.Lihui Wang Yue Xu Heather Rogers Layla Saidi Constance Tom Noguchi Honglin Li Jonathan Wilson Yewdell Nicholas Raymond Guydosh Yihong Ye 2020Cell Research2020,30,1:5
16Formula for calculating spatial similarity degrees between point clouds on multi-scale maps taking map scale change as the only independent variable显示文摘The degree of spatial similarity plays an important role in map generalization, yet there has been no quantitative research into it. To fill this gap, this study first defines map scale change and spatial similarity degree/relation in multi-scale map spaces and then proposes a model for calculating the degree of spatial similarity between a point cloud at one scale and its generalized counterpart at another scale. After validation, the new model features 16 points with map scale change as the x coordinate and the degree of spatial similarity as the y coordinate.Finally, using an application for curve fitting, the model achieves an empirical formula that can calculate the degree of spatial similarity using map scale change as the sole independent variable, and vice versa. This formula can be used to automate algorithms for point feature generalization and to determine when to terminate them during the generalization.Yang Weifang Yan Haowen Li Jonathan 2015Geodesy and Geodynamics2015,6,2:5
17Order from Chaos: Self-Assembly of Nanoprism from a Mixture of Tetratopic Terpyridine-Porphyrin Conformers显示文摘Background and Originality Content Porphyrins are a vibrant class of organic dyes found widely in nature,ranging from the well-studied chlorophyll and heme found in the cells of plants and red blooded animals to the less known chlorocruoroporphyrin found in annelids.Alexander Filosa Heng Wang Wei-Jian Li Wenjing Zhang Ellie Ngo Jonathan EPiccolo Hai-Bo Yang Xiaopeng Li 2019Chinese Journal of Chemistry2019,37,11:3
18Dysfunctional stem and progenitor cells impair fracture healing with age显示文摘Successful fracture healing requires the simultaneous regeneration of both the bone and vasculature;mesenchymal stem cells (MSCs) are directed to replace the bone tissue, while endothelial progenitor cells (EPCs) form the new vasculature that supplies blood to the fracture site. In the elderly, the healing process is slowed, partly due to decreased regenerative function of these stem and progenitor cells. MSCs from older individuals are impaired with regard to cell number, proliferative capacity, ability to migrate, and osteochondrogenic differentiation potential. The proliferation, migration and function of EPCs are also compromised with advanced age. Although the reasons for cellular dysfunction with age are complex and multidimensional, reduced expression of growth factors, accumulation of oxidative damage from reactive oxygen species, and altered signaling of the Sirtuin-1 pathway are contributing factors to aging at the cellular level of both MSCs and EPCs. Because of these geriatric-specific issues, effective treatment for fracture repair may require new therapeutic techniques to restore cellular function. Some suggested directions for potential treatments include cellular therapies, pharmacological agents, treatments targeting age-related molecular mechanisms, and physical therapeutics. Advanced age is the primary risk factor for a fracture, due to the low bone mass and inferior bone quality associated with aging;a better understanding of the dysfunctional behavior of the aging cell will provide a foundation for new treatments to decrease healing time and reduce the development of complications during the extended recovery from fracture healing in the elderly.Diane R Wagner Sonali Karnik Zachary J Gunderson Jeffery J Nielsen Alanna Fennimore Hunter J Promer Jonathan W Lowery M Terry Loghmani Philip S Low Todd O McKinley Melissa A Kacena Matthias Clauss Jiliang Li 2019World Journal of Stem Cells2019,11,6:3
19Selective electrochemical production of hydrogen peroxide at zigzag edges of exfoliated molybdenum telluride nanoflakes显示文摘The two-electron reduction of molecular oxygen represents an effective strategy to enable the green,mild and on-demand synthesis of hydrogen peroxide.Its practical viability,however,hinges on the development of advanced electrocatalysts,preferably composed of non-precious elements,to selectively expedite this reaction,particularly in acidic medium.Our study here introduces 2H-MoTe2 for the first time as the efficient non-precious-metal-based electrocatalyst for the electrochemical production ofhydrogen peroxide in acids.We show that exfoliated 2H-MoTe2 nanoflakes have high activity(onset overpotential〜140 mV and large mass activity of 27 A g^-1 at 0.4 V versus reversible hydrogen electrode),great selectivity(H2O2 percentage up to 93%)and decent stability in 0.5 M H2SO4.Theoretical simulations evidence that the high activity and selectivity of 2H-MoTe2 arise from the proper binding energies of HOO*and O*at its zigzag edges that jointly favor the two-electron reduction instead of the four-electron reduction of molecular oxygen.Xuan Zhao Yu Wang Yunli Da Xinxia Wang Tingting Wang Mingquan Xu Xiaoyun He Wu Zhou Yafei Li Jonathan NColeman Yanguang Li 2020National Science Review2020,7,8:3
20Experimental Gaussian Boson sampling显示文摘Gaussian Boson sampling(GBS) provides a highly efficient approach to make use of squeezed states from parametric down-conversion to solve a classically hard-to-solve sampling problem. The GBS protocol not only significantly enhances the photon generation probability, compared to standard Boson sampling with single photon Fock states, but also links to potential applications such as dense subgraph problems and molecular vibronic spectra. Here, we report the first experimental demonstration of GBS using squeezed-state sources with simultaneously high photon indistinguishability and collection efficiency.We implement and validate 3-, 4- and 5-photon GBS with high sampling rates of 832, 163 and 23 kHz,respectively, which is more than 4.4, 12.0, and 29.5 times faster than the previous experiments.Further, we observe a quantum speed-up on a NP-hard optimization problem when comparing with simulated thermal sampler and uniform sampler.Han-Sen Zhong Li-Chao Peng Yuan Li Yi Hu Wei Li Jian Qin Dian Wu Weijun Zhang Hao Li Lu Zhang Zhen Wang Lixing You Xiao Jiang Li Li Nai-Le Liu Jonathan P.Dowling Chao-Yang Lu Jian-Wei Pan 2019Science Bulletin2019,64,8:3
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