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Programmable silicon-photonic quantum simulator based on a linear combination of unitaries

Photonics Research 2024年第8期12卷 1760-1767页

作者： YUE YU yulin chi CHONGHAO ZHAI JIESHAN HUANG QIHUANG GONG JIANWEI WANG State Key Laboratory for Mesoscopic Physics School of Physics Peking University Frontiers Science Center for Nano-optoelectronics & Collaborative Innovation Center of Quantum Matter Peking University Collaborative Innovation Center of Extreme Optics Shanxi University Yangtze Delta Institute of Optoelectronics Peking University Hefei National Laboratory

Simulating the dynamic evolution of physical and molecular systems in a quantum computer is of fundamental interest in many applications. The implementation of dynamics simulation requires efficient quantum algorithms. The Lie-Trotter-Suzuki approximation algorithm, also known as the Trotterization, is basic in Hamiltonian dynamics simulation. A multi-product algorithm that is a linear combination of multiple Trotterizations has been proposed to improve the approximation accuracy. However, implementing such multiproduct Trotterization in quantum computers remains challenging due to the requirements of highly controllable and precise quantum entangling operations with high success probability. Here, we report a programmable integrated-photonic quantum simulator based on a linear combination of unitaries, which can be tailored for implementing the linearly combined multiple Trotterizations, and on the simulator we benchmark quantum simulation of Hamiltonian dynamics. We modify the multi-product algorithm by integrating it with oblivious amplitude amplification to simultaneously reach high simulation precision and high success probability. The quantum simulator is devised and fabricated on a large-scale silicon-photonic quantum chip, which allows the initialization, manipulation, and measurement of arbitrary four-qubit states and linearly combined unitary gates. As an example, the quantum simulator is reprogrammed to emulate the dynamics of an electron spin and nuclear spin coupled system. This work promises the practical dynamics simulations of real-world physical and molecular systems in future large-scale quantum computers. ? 2024 chinese Laser Press

关键词： Numerical simulation Quantum computation Quantum simulator Quantum technology Signal processing Silicon photonics

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High-dimensional quantum information processing on programmable integrated photonic chips

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Science china(Information Sciences) 2023年第8期66卷 5-22页

作者： yulin chi Yue YU Qihuang GONG Jianwei WANG State Key Laboratory for Mesoscopic Physics School of Physics Peking University Frontiers Science Center for Nano-optoelectronics and Collaborative Innovation Center of Quantum Matter Peking University Peking University Yangtze Delta Institute of Optoelectronics Collaborative Innovation Center of Extreme Optics Shanxi University Hefei National Laboratory

This study reviews the recent progress of high-dimensional quantum information processing with photons. We first introduce the basic language of high-dimensional quantum information, including the representation of quantum dits(qudits), unitary operations of qudit states, and the general format of quantum algorithms with qudits. We discuss experimental implementations of high-dimensional quantum information processing and quantum computing in photonic systems, particularly in integrated quantum photonic platforms. We also discuss how qudit-based quantum photonic devices and systems can be adopted for further improving qubit-based quantum computation and quantum simulation.

关键词： high-dimensional quantum information processing quantum computation integrated quantum photonics

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Tb^(3+)-nucleic acid probe-based label-free and rapid detection of mercury pollution in food

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Food Science and Human Wellness 2024年第2期13卷 993-998页

作者： Xuhan Xia Chenxi Zhou yulin Zhu Yi Dong Qiang He Mohammad Rizwan Khan Yuanlong chi Rosa Busquets Ruijie Deng Yao Ren College of Biomass Science and Engineering Healthy Food Evaluation Research CenterSichuan UniversityChengdu 610065China Department of Chemistry College of ScienceKing Saud UniversityRiyadh 11451Saudi Arabia School of Life Sciences Pharmacy and ChemistryKingston University LondonKingston Upon Thames KT12EEUK

Mercury is a threatening pollutant in food,herein,we developed a Tb^(3+)-nucleic acid probe-based label-free assay for mix-and-read,rapid detection of mercury *** assay utilized the feature of light-up fluorescence of terbium ions(Tb^(3+))via binding with single-strand *** ion,Hg^(2+)induced thymine(T)-rich DNA strand to form a double-strand structure(T-Hg^(2+)-T),thus leading to fluorescence *** on the principle,Hg^(2+)can be quantified based on the fluorescence of Tb^(3+),the limit of detection was 0.0689μmol/L and the linear range was 0.1-6.0μmol/*** to the specificity of T-Hg^(2+)-T artificial base pair,the assay could distinguish Hg^(2+)from other metal *** recovery rate was ranged in 98.71%-101.34%for detecting mercury pollution in three food *** assay is low-cost,separation-free and mix-to-read,thus was a competitive tool for detection of mercury pollution to ensure food safety.

关键词： Mercury pollution Food safety Nucleic acid probe Label-free Terbium

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Honeycomb-like biochar framework coupled with Fe_(3)O_(4)/FeS nanoparticles as efficient heterogeneous Fenton catalyst for phenol degradation

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Journal of Environmental Sciences 2024年第2期136卷 390-399页

作者： Aihua Cheng Yi He Xiaohe Liu chi He Department of Environmental Engineering College of Geology and EnvironmentXi’an University of Science and TechnologyXi’an 710054China State Key Laboratory of Multiphase Flow in Power Engineering School of Energy and Power EngineeringXi’an Jiaotong UniversityXi’an 710049China National Engineering Laboratory for VOCs Pollution Control Material and Technology University of Chinese Academy of SciencesBeijing 101408China

Achieving an efficient and stable heterogeneous Fenton reaction over a wide pH range is of great significance for wastewater ***,a pollen-derived biochar catalyst with a unique honeycomb-like structure,coupled with the dispersion of magnetic Fe_(3)O_(4)/FeS(Fe/S)nanoparticles,was synthesized by simple impregnation precursor,followed by *** prepared Fe/S-biochar catalyst demonstrated outstanding phenol degradation efficiency across a wide pH range,with 98%of which eliminated even under neutral conditions(pH 7.0).The high catalytic activity was due to the multilevel porous structure of pollenderived biochar provided enough active sites and allowed for better electron transfer,then increases oxidation ability to promote the ***,the acid microenvironment formed by SO_(4)^(2-)group from Fe/S composite extended the pH range for Fenton reaction,and S^(2-)facilitated the conversion of≡Fe^(3+)to≡Fe^(2+),resulting in remarkable degradation ***,biochar can effectively promote cycling stability by limiting Fe *** work may provide a general strategy for designing 3D framework biochar-based Fe/S catalysts with excellent performance for heterogeneous Fenton reactions.

关键词： Biomass Biochar Fenton reaction Fe_(3)O_(4)/FeS(Fe/S) Phenol degradation

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Tongue image feature correlation analysis in benign lung nodules and lung cancer

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Digital chinese Medicine 2024年第2期7卷 120-128页

作者： SHI yulin LIU Jiayi CHUN Yi LIU Lingshuang XU Jiatuo The Academic Affairs Office Shanghai University of Traditional Chinese MedicineShanghai 201203China School of Traditional chinese Medicine Shanghai University of Traditional Chinese MedicineShanghai 201203China Longhua Hospital Affiliated to Shanghai University of Traditional chinese Medicine Shanghai 200032China

Objective To analyze the differences in the correlation of tongue image indicators among patients with benign lung nodules and lung *** From July 1;2020 to March 31;2022;clinical information of lung cancer patients and benign lung nodules patients was collected at the Oncology Department of Longhua Hos-pital Affiliated to Shanghai University of Traditional chinese Medicine and the Physical Ex-amination Center of Shuguang Hospital Affiliated to Shanghai University of Traditional chi-nese Medicine;*** obtained tongue images from patients with benign lung nod-ules and lung cancer using the TFDA-1 digital tongue diagnosis instrument;and analyzed these images with the TDAS V2.0 *** extracted indicators included color space pa-rameters in the Lab system for both the tongue body(TB)and tongue coating(TC)(TB/TC-L;TB/TC-a;and TB/TC-b);textural parameters[TB/TC-contrast(CON);TB/TC-angular second moment(ASM);TB/TC-entropy(ENT);and TB/TC-MEAN];as well as TC parameters(perAll and perPart).The bivariate correlation of TB and TC features was analyzed using Pearson’s or Spearman’s correlation analysis;and the overall correlation was analyzed using canonical correlation analysis(CCA).Results Samples from 307 patients with benign lung nodules and 276 lung cancer patients were included after excluding outliers and extreme *** correlation analysis indi-cated that the correlation of TB-L with TC-L;TB-b with TC-b;and TB-b with perAll in lung cancer group was higher than that in benign nodules ***;the correlation of TB-a with TC-a;TB-a with perAll;and the texture parameters of the TB(TB-CON;TB-ASM;TB-ENT;and TB-MEAN)with the texture parameters of the TC(TC-CON;TC-ASM;TC-ENT;and TC-MEAN)in benign nodules group was higher than lung cancer *** further demon-strated a strong correlation between the TB and TC parameters in lung cancer group;with the first and second pairs of typical variables in benign nodules and lung cancer groups in

关键词： Benign lung nodules Lung cancer Tongue image Correlation analysis Differential diagnosis

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右美托咪定在腰硬联合麻醉中对骨科手术麻醉效果及血压的影响评价

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中外医疗 2023年第36期42卷 105-108页

作者：黄奇龙池玉林马逸莆田滨海医院麻醉科

目的分析右美托咪定在腰硬联合麻醉中的可行性以及对患者血压以及麻醉效果的影响。方法方便选取2022年4月—2023年4月莆田滨海医院收治的62例骨科手术患者为研究对象,按照随机数表法分为对照组和观察组,每组31例,其中观察组患者采用... 详细信息

目的分析右美托咪定在腰硬联合麻醉中的可行性以及对患者血压以及麻醉效果的影响。方法方便选取2022年4月—2023年4月莆田滨海医院收治的62例骨科手术患者为研究对象,按照随机数表法分为对照组和观察组,每组31例,其中观察组患者采用右美托咪定麻醉,对照组患者采用常规麻醉方法,比较两组患者的麻醉效果与血压值变化情况。结果两组患者术前血压比较,差异无统计学意义(P>0.05);但观察组患者给药30 min与给药60 min的血压均高于对照组,差异有统计学意义(P均<0.05);两组患者的镇痛效果比较,观察组患者术后30 min和术后3、6、12 h的视觉模拟评分(Visual Analogue Scale,VAS)分别为(3.01±0.41)分、(4.24±0.35)分、(4.11±0.37)分、(3.76±0.25)分均低于对照组,差异有统计学意义(t=4.738、5.194、5.747、8.697,P均<0.05);比较两组患者的认知功能评分以及睡眠质量评分,观察组均优于对照组,且观察组患者术后不良事件发生率更低,差异有统计学意义(P均<0.05)。结论在骨科疾病患者外科干预阶段,选择正确的麻醉具有可行性,而腰硬联合麻醉阶段采用右美托咪定成为提升麻醉效果的关键,具有可行性。

关键词：骨科手术麻醉腰硬联合麻醉右美托咪定麻醉效果血压

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Hierarchically Structured Nb_(2)O_5 Microflowers with Enhanced Capacity and Fast-Charging Capability for Flexible Planar Sodium Ion Micro-Supercapacitors

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Nano-Micro Letters 2024年第4期16卷 97-109页

作者： Jiaxin Ma Jieqiong Qin Shuanghao Zheng Yinghua Fu Liping chi Yaguang Li Cong Dong Bin Li Feifei Xing Haodong Shi Zhong‑Shuai Wu State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of Sciences457 Zhongshan RoadDalian 116023People’s Republic of China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001People’s Republic of China College of Science Henan Agricultural UniversityNo.63 Agricultural RoadZhengzhou 450002People’s Republic of China Dalian National Laboratory for Clean Energy Chinese Academy of Sciences457 Zhongshan RoadDalian 116023People’s Republic of China University of chinese Academy of Sciences 19A Yuquan RoadShijingshan DistrictBeijing 100049People’s Republic of China Hebei Key Lab of Optic‑Electronic Information and Materials The College of Physics Science and TechnologyInstitute of Life Science and Green DevelopmentHebei UniversityBaoding 071002People’s Republic of China

Planar Na ion micro-supercapacitors(NIMSCs) that offer both high energy density and power density are deemed to a promising class of miniaturized power sources for wearable and portable microelectron-ics. Nevertheless, the development of NIMSCs are hugely impeded by the low capacity and sluggish Na ion kinetics in the negative ***, we demonstrate a novel carbon-coated Nb_(2)O_5 microflower with a hierarchical structure composed of vertically intercrossed and porous nanosheets, boosting Na ion storage performance. The unique structural merits, including uniform carbon coating, ultrathin nanosheets and abun-dant pores, endow the Nb_(2)O_5 microflower with highly reversible Na ion storage capacity of 245 mAh g^(-1) at 0.25 C and excellent rate *** from high capacity and fast charging of Nb_(2)O_5 microflower, the planar NIMSCs consisted of Nb_(2)O_5 negative electrode and activated car-bon positive electrode deliver high areal energy density of 60.7 μWh cm^(-2),considerable voltage window of 3.5 V and extraordinary cyclability. Therefore, this work exploits a structural design strategy towards electrode materials for application in NIMSCs, holding great promise for flexible microelectronics.

关键词： Nb_(2)O_5 nanosheets Microflowers Sodium ion micro-supercapacitors Flexibility Energy storage

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面向压电能量收集的传感器系统设计

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农业装备与车辆工程 2024年第4期62卷 98-101页

作者：戴路池振坤张闽何玉林周昊江苏财经职业技术学院江苏淮安223001 淮安达发汽车销售服务有限公司江苏淮安223001

为解决无线传感器系统供电受限问题,设计了一种基于压电效应的能量采集系统。该系统由能量收集模块、能量管理模块和无线传感模块组成。通过收集环境中的低频机械振动能量并将其存储到储能元件,实现为传感系统供电,其中能量管理模块采... 详细信息

为解决无线传感器系统供电受限问题,设计了一种基于压电效应的能量采集系统。该系统由能量收集模块、能量管理模块和无线传感模块组成。通过收集环境中的低频机械振动能量并将其存储到储能元件,实现为传感系统供电,其中能量管理模块采用升压芯片BQ25570,它将输入端电压升高至3.3 V并存储在储能元件为整个系统供电。实验结果表明,设计的无线传感器自供电系统能够在一定条件下实现能量的采集与利用,一定程度上延长了系统的工作时间。

关键词：自供电压电效应能量收集传感系统

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TA1钛合金药型罩剪切旋压成形塑性变形规律的数值模拟研究

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精密成形工程 2024年第8期16卷 1-10页

作者：邵玉林刘博潘贵平刘占洲张驰张立文邵志文王市均大连理工大学材料科学与工程学院辽宁大连116024 西南技术工程研究所重庆400039 中国兵器研究院宁波分院浙江宁波315103 冶金工业信息标准研究院北京100730

目的TA1钛合金作为药型罩材料,具有提高穿深和侵彻孔径的优异表现,但其剪切旋压成形过程中塑性变形规律复杂且难于控制,以期通过有限元数值计算解析多工艺参数的协同作用。方法建立了TA1薄壁锥形件结构旋压加工过程的三维非线性热-力耦... 详细信息

目的TA1钛合金作为药型罩材料,具有提高穿深和侵彻孔径的优异表现,但其剪切旋压成形过程中塑性变形规律复杂且难于控制,以期通过有限元数值计算解析多工艺参数的协同作用。方法建立了TA1薄壁锥形件结构旋压加工过程的三维非线性热-力耦合有限元模型,研究了TA1从圆形板坯到锥形件旋压全过程的金属塑性变形行为、应力及应变的变化。采用正交实验分析了旋轮进给速率、芯轴转速与板坯厚度对成形过程的旋压力以及成形样件的内径偏差和壁厚偏差的影响规律。结果结果表明,锥形件侧壁的塑性应变沿母线方向逐渐减小,最大应变值出现在靠近锥形件顶部的小端面位置。旋压载荷随旋轮进给速率与板坯厚度增加而增加,随芯轴转速增加而减小。内径偏差随进给速率与板坯厚度的增加而减小,与芯轴转速的相关性较小。壁厚偏差随进给速率的增加先减小后增大,随芯轴转速与板坯厚度的增加而减小。结论基于数值模拟结果,获得TA1薄壁锥形件的优化工艺参数为:旋轮进给速率300mm/min,芯轴转速260r/min,板坯初始厚度4mm。开展了TA1钛合金剪切旋压成形实验,所得锥形件尺寸与模型计算结果一致,验证了模型的准确性。

关键词：剪切旋压 TA1钛合金锥形件数值模拟塑性变形

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Safety Protection Method of Rehabilitation Robot Based on fNIRS and RGB-D Information Fusion

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Journal of Shanghai Jiaotong university(Science) 2022年第1期27卷 45-54页

作者： LI Dong FAN yulin LU Na CHEN Guodong WANG Zheng chi Wenzheng School of Mechanical and Electrical Engineering/Jiangsu Provincial Key Laboratory of Advanced Robotics/Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow UniversitySuzhou 215123JiangsuChina Department of Gerontology Shanghai Jiao Tong University Affiliated Sixth People’s HospitalShanghai 200233China Department of Instrument Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China

In order to improve the safety protection performance of the rehabilitation robot,an active safety protection method is proposed in the rehabilitation *** oxyhemoglobin concentration information and RGB-D information are combined in this method,which aims to realize the comprehensive monitoring of the invasion target,the patient’s brain function movement state,and the joint angle in the rehabilitation *** main focus is to study the fusion method of the oxyhemoglobin concentration information and RGB-D information in the rehabilitation *** analysis of brain functional connectivity coefficient was used to distinguish the basic motion *** human skeleton recognition algorithm was used to realize the angle monitoring of the upper limb joint combined with the depth *** with speed and separation monitoring,the protection method of multi-information fusion is safer and more comprehensive for stroke *** building the active safety protection platform of the upper limb rehabilitation robot,the performance of the system in different safety states is tested,and the safety protection performance of the method in the upper limb rehabilitation scene is verified.

关键词： upper limb rehabilitation robot safety protection functional near-infrared spectroscopy(fNIRS) multi-information fusion

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