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Direct generation of one-way Einstein-Podolsky-Rosen steering with a self-phase-locked optical parametric oscillator

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Physical Review A 2023年第1期108卷 012430-012430页

作者： Zhan Zheng Mingyan Yao Jianping Tong Qiang Lin Yin Cai Zhejiang Provincial Key Laboratory of Quantum Precision Measurement College of Science Zhejiang University of Technology Hangzhou 310023 China Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Lab of Information Photonic Technique School of Electronic Science and Engineering Xi'an Jiaotong University Xi'an Shaanxi 710049 China

Einstein-Podolsky-Rosen (EPR) steering, that is, an intermediate form of quantum correlations with asymmetry in between entanglement and Bell nonlocality, plays an essential role in quantum information processing, such as one-sided device-independent quantum cryptography tasks. Here we theoretically study the direct generation of EPR steering in χ(2) nonlinear optical processes with cascaded crystals in a self-phase-locked optical parametric oscillator. Based on a standard linearization method, we analyze different conditions for generating EPR steering in Gaussian states with vanishing or nonzero mean fields, and also show bistable regions for different types of EPR steering. In particular, such system can intrinsically generate asymmetry one-way EPR steering, without introducing any postoperation. Our results suggest that the self-phase-locked optical parametric oscillator is a good candidate to generate different types of EPR steering at will by varying the cavity detunings, photon loss, or input pump power.

关键词： Nonlocality Quantum optics Quantum states of light Squeezing of quantum noise

A Review of Calibration Standards, Devices and Methods for Process Gas flow

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SSRN 2024年

作者： Zhang, Gaoming Hui, Boxu Xu, Zhipeng Zhou, Bin Sundén, Bengt Cao, Zhen China Jiliang University China Zhejiang Provincial Key Laboratory of Flow Measurement Technology China Jiliang University Hangzhou China Lund University Lund Sweden BS Heat Transfer and Fluid Flow Angelholm Sweden Department of Thermal and Fluid Engineering University of Twente Drienerlolaan 5 Enschede7522 NB Netherlands

Semiconductor manufacturing involves various gases in about 500 processes of oxidation, vapor deposition, lithography, etching doping, inerting, annealing, and chamber cleaning. To ensure the quality of manufactured semiconductors, accurate and reproducible gas flow measurement and control are necessary. Gas flow standards with low uncertainty are the foundation of accurate gas flow measurements and traceability for flow meters used in semiconductor manufacturing. Besides, physical models are significant to calculate or correct the measured flow rate and extrapolate calibration results to unknown gases introduced to the manufacturing process. Thus, in this work the intention is to provide the principle, structure and performances of gas flow standards used for calibration of process gases and corresponding models and methods for gas flow calculation and corrections. The aim is to advise anyone concerned of measurement and calibration of process gas flow. © 2024, The Authors. All rights reserved.

关键词： flow of gases

Promising Refractive Index and Temperature Biosensor Based on Hybrid Gmr/Fp System Employed for the Detection of Sars-Cov-2

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SSRN 2022年

作者： Liu, Na Wang, Shutao Wang, Junzhu Lv, Jiangtao Cheng, Qi Ma, Wenbo Lu, Yuhong Key Laboratory in Measurement Technology and Instrument of Hebei Province School of Electrical Engineering Yanshan University Qinhuangdao066004 China Zhejiang provincial key laboratory of flow measurement technology College of Metrology &Measurement Engineering China JiLiang University Zhejiang310018 China Key Laboratory of Micro-nano precision optical sensing and detection technology of Hebei Provincial Northeastern University Qinhuangdao066004 China

A reflective optical sensor based on a hybrid guide mode resonance (GMR)/ asymmetric Fabry−Perot (FP) resonator was designed to measure SARS-CoV-2 concentration and temperature simultaneously in this article. The sensor adopted GMR configuration as a refractive index (RI) sensing channel to measure SARS-CoV-2 concentration because it is in direct contact with the analyte. In contrast, an asymmetric FP resonator was used as a temperature sensing channel due to its temperature-sensitive. When the SARS-CoV-2 concentration and temperature change, the two reflection peaks would all shift, but with different sensitivities. Two separate channels can distinguish the variations of RI and temperature independently by using the dual-wavelength matrix method, thus completely solving the cross-sensitivity problem. Moreover, by monitoring the wavelength movements of the resonance peaks, the results indicate that the measurement sensitivity of the SARS-CoV-2 concentration was 833.33 nm/RIU, and the temperature measurement sensitivity was 0.14 nm/°C. We believe that this work is very friendly for the design of optical sensors for multi-parameter measurement applications. © 2022, The Authors. All rights reserved.

关键词： SARS

Entanglement-Enhanced Magnetic Induction Tomography

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Physical Review Letters 2023年第20期130卷 203602-203602页

作者： Wenqiang Zheng Hengyan Wang Rebecca Schmieg Alan Oesterle Eugene S. Polzik Niels Bohr Institute University of Copenhagen Blegdamsvej 17 2100 Copenhagen ø Denmark Zhejiang Provincial Key Laboratory and Collaborative Innovation Center for Quantum Precision Measurement College of Science Zhejiang University of Technology Hangzhou 310023 China Department of Physics Zhejiang University of Science and Technology Hangzhou 310023 China

Magnetic induction tomography (MIT) is a sensing protocol exploring conductive objects via their response to radio-frequency magnetic fields. MIT is used in nondestructive testing ranging from geophysics to medical applications. Atomic magnetometers, employed as MIT sensors, allow for significant improvement of the MIT sensitivity and for exploring its quantum limits. Here, we propose and verify a quantum-enhanced version of the atomic MIT by combining it with conditional spin squeezing and stroboscopic backaction evasion. We use this quantum enhancement to demonstrate sensitivity beyond the standard quantum limits of one-dimensional quantum MIT detecting a conductive sample.

关键词： Light-matter interaction Quantum optics

High-Performance Synchronization Control of Multi-Axis Motion System Based on Fully-Actuated System Approach

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High-Performance Synchronization Control of Multi-Axis Motio...

IEEE International Conference on Industrial technology (ICIT)

作者： Dufei Zhang Yao-Wei Wang Caoyuan Gu Yu Jia Qi Wu Xiang Wu School of Information Science and Engineering Wuhan University of Science and Technology Wuhan China Engineering Research Center of Metallurgical Automation and Measurement Technology Wuhan University of Science and Technology Wuhan China Department of Automation Zhejiang University of Technology Zhejiang Provincial United Key Laboratory of Embedded Systems Hangzhou China

ISBN: (数字)9798331521950

ISBN: (纸本)9798331521967

This paper investigates a class of synchronization control problem of multi-axis motion systems(MAMSs) with uncertainty and external disturbances. Firstly, a system model that satisfies the full-actuation condition is obtained by performing differential decomposition on each axis(subsystem). The uncertainty and external disturbances are treated as the lumped disturbances of the system. Secondly, a fully-actuated system approach based controller is designed to obtain a linear closed-loop system, which the parameters of the system are determined by parametric approach. Furthermore, the synchronization error model is established and a generalized extended state observer(GESO) is designed to estimate the system state while also estimating the lumped disturbances of the system. Then, the controller with disturbance compensation is designed to achieve high-performance synchronization control of the MSMSs, and system stability analysis is provided. Finally, the effectiveness and superior performance of the proposed approach is verified by simulation experiments.

关键词： Uncertainty Stability analysis Synchronization Closed loop systems

Research on the Application of Inertially Stabilized Platform in the Dynamic measurement of Cold Atomic Gravimeter

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SSRN 2023年

作者： Jiang, Min-Rui Chen, Pei-Jun Lv, Xiao-Feng Yang, Di Peng, Shu-Ping Zhejiang Provincial Key Laboratory of Quantum Precision Measurement College of Science Zhejiang University of Technology Hangzhou310023 China School of mechanical and electrical engineering Huangshan College Huangshan245041 China

Dynamic gravity field measurement based on the cold atom absolute gravity measurement system has important applications in geological exploration, gravity field mapping and other fields. Dynamic absolute gravity measurement experiments at domestic and international level are still at an early stage. To obtain dynamic absolute gravity measurements, the probe must be kept horizontal. The current Cold Atomic Gravimeter is huge and has an uneven mass distribution, so it's essential to design an inertially stabilized platform for cold atomic gravimeter. The inertially stabilized platform is a key component of the dynamic cold atomic absolute gravity measurement system, isolating external angular motion disturbances, enabling tracking and target positioning functions, and maintaining the atomic gravimeter probe vertical at all times in harsh dynamic environments. For this application, a high-precision two-axis inertially stabilized platform system is designed and the static vertical vibration power spectrum of the platform is measured to consider its effect on dynamic gravity measurement;At the same time, navigation experiments were performed in the Yellow Sea to verify the attitude control accuracy of the platform, and the attitude data of the platform at different heading were evaluated, and the attitude standard deviation was better than 4×10-5 rad. The experimental data in this paper demonstrate that the inertially stabilized platform can accommodate the dynamic measurement requirements of the Cold Atomic Gravimeter. © 2023, The Authors. All rights reserved.

关键词： Gravimeters

Experimental Study on the Dynamics of a Laser-Induced Bubble Near a Liquid-Membrane-Liquid Interface

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SSRN 2023年

作者： Zhong, Yuying Shen, Jingdong Gao, Xiaoyan Lin, Renyong Qiu, Shijun Xu, Fei Tu, Chengxu Bao, Fubing Zhejiang Provincial Key Laboratory of Flow Measurement Technology China Jiliang University Hangzhou310018 China LEO Group Co. Ltd. Wenling317500 China Research Center of Fluid Machinery Engineering and Technology Jiangsu University Zhenjiang212013 China

Bubble oscillation near an elastic membrane submerged by different liquids on each side – a liquid-membrane-liquid interface – is a common phenomenon in cavitation applications like shock lithotripsy, necessitating further exploration. The dynamics of a laser-induced bubble near a liquid-membrane-liquid interface is investigated in this study through high-speed photography technology. The temporal evolutions of the interaction between the bubble and the membrane are presented for typical collapse patterns, and the jetting behavior, bubble migration, and bubble oscillation period are determined. Apart from the unidirectional jet and the bidirectional jets, secondary jets are observed in our experiments. The results show that the effect of liquid difference (density ratio) and the effect of membrane on bubble dynamics both vary with dimensionless distance γ. For different density ratios, the liquid difference always governs the jet direction and bubble migration at large γ values, while the combined effects of liquid difference and membrane are responsible for the bubble behavior at intermediate γ values. Additionally, the effect of membrane is more pronounced on jet formation when γ values are close to zero, hence, the bubble always migrates away from the membrane. © 2023, The Authors. All rights reserved.

关键词： Cavitation

Proteomics profiling of colorectal cancer progression identifies PLOD2 as a potential therapeutic target

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Cancer Communications 2022年第2期42卷 164-169页

作者： Yingkuan Shao Kailun Xu Xi Zheng Biting Zhou Xiuli Zhang Lin Wang Yaoting Sun Dan Li Ting Chen Jian Wang Shaojun Yu Lifeng Sun Xiaoming Xu Shaozhi Dai Huanhuan Gao Guan Ruan Wei Liu Xue Cai Tiansheng Zhu Lina Qi Jiani Chen Wangxiong Hu Xingyue Weng Yi Zhu Xueping Xiang Zhiyuan Hu Jinfan Li Lirong Chen Jimin Shao Shu Zheng Tiannan Guo Key Laboratory of Cancer Prevention and Intervention Ministry of EducationDepartment of Breast Surgery and OncologySecond Affiliated HospitalSchool of MedicineCancer InstituteZhejiang UniversityHangzhouZhejiang 310009P.R.China Zhejiang Provincial Laboratory of Life Sciences and Biomedicine Key Laboratory of Structural Biology of Zhejiang ProvinceSchool of Life SciencesWestlake University18 Shilongshan RoadHangzhouZhejiang 310024P.R.China Institute of Basic Medical Sciences Westlake Institute for Advanced Study18 Shilongshan RoadHangzhouZhejiang 310024P.R.China CAS Key Laboratory of Standardization and Measurement for Nanotechnology CAS Key Laboratory for Biomedical Effects of Nanomaterials and NanosafetyCAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology of ChinaBeijing 100190P.R.China Zhejiang Provincial Key Laboratory of Pancreatic Disease The First Affiliated HospitalZhejiang University School of MedicineHangzhouZhejiangP.R.China Department of Colorectal Surgery the Second Affiliated Hospital of Zhejiang University School of MedicineHangzhouZhejiang 310009P.R.China Department of Pathology The Second Affiliated HospitalZhejiang University School of MedicineHangzhouZhejiang 310009P.R.China School of Nanoscience and Technology Sino-Danish CollegeUniversity of Chinese Academy of SciencesBeijing 100049P.R.China Fujian Provincial Key Laboratory of Brain Aging and Neurodegenerative Diseases School of Basic Medical SciencesFujian Medical UniversityFuzhouFujian 350108P.R.China Department of Pathology and Pathophysiology Key Laboratory of Disease Proteomics of Zhejiang ProvinceZhejiang University School of MedicineHangzhouZhejiang 310058P.R.China

Dear editors,Colorectal cancer(CRC)is the second leading cause of cancer deaths in developed countries[1].The malignant transformation from small clumps to cancer takes about 10 years[2].This study aimed to characterize proteomic dynamics associated with CRC development and progres-sion,and identify novel therapeutic targets for intercepting the underlying oncogenic *** have optimized pressure cycling technology(PCT)coupled with data-independent acquisition mass spectrometry(DIA-MS)for robust and reproducible proteomic analysis of biopsy-level formalin-fixed paraffin-embedded(FFPE)tissues[3].

关键词： therapeutic cancer colorectal

The research of force standard machine tracing to the Planck constant h

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measurement: Sensors 2024年 38卷

作者： Chen, Yuanjie Wang, Na Xu, JinXin Yin, Ruiduo Chen, Jie Xie, Xiaobin Chen, Jianing Min, Yue Li, Haigen Zhejiang Institute of Quality Sciences Hangzhou China China Jiliang University Hangzhou China Shaoxing Kent Machinery Electronics Co. Ltd. Hangzhou China Zhejiang Provincial Key Laboratory of Digital Precision Measurement Technology China

The force transducer converts the magnitude of a force into an associated electrical signal, detecting mechanical quantities such as tension, pressure, weight, torque, strain, and internal stress. Being an indispensable core component of power equipment, construction machinery, various working machinery, and industrial automation systems, the calibration of the force transducer is crucial. This paper proposes a continuous force standard machine for calibrating force transducers, which combines the advantages of the common force standard machines and the Kibble balance. The goal of the proposed standard machine is to continuously measure the electromagnetic force and trace the force to Planck constant h. In the proposed design, the standard electromagnetic force of kilonewton magnitude is generated by the permanent magnet and coil system, which can be continuously changed by adjusting the magnitude and direction of the coil current. The electromagnetic force, amplified by the unequal arm balance lever, acts on the calibrated transducer. Herein, the concrete components of the new force standard machine are given, and the feasibility is demonstrated. © 2024

关键词： Construction equipment