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Investigation of the effect of quantum measurement on parity-time symmetry

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Science China(Physics,Mechanics & Astronomy) 2022年第6期65卷 36-43页

作者： Wei-Chen Wang Yi Xie Man-Chao Zhang Jie Zhang Chun-Wang Wu Ting Chen bao-quan ou Wei Wu Ping-Xing Chen Department of Physics College of Liberal Arts and SciencesNational University of Defense TechnologyChangsha 410073China Interdisciplinary Center for quantum Information National University of Defense TechnologyChangsha 410073China

Symmetry,including the parity-time(PT)-symmetry,is a striking topic,widely discussed and employed in many *** is well-known that quantum measurement can destroy or disturb quantum ***,can and how does quantum measurement destroy the symmetry of the measured system?To answer the pertinent question,we establish the correlation between the quan-tum measurement and Floquet PT-symmetry and investigate for the first time how the measurement frequency and measurement strength affect the PT-symmetry of the measured system using the 40Ca+*** is already shown that the measurement at high frequencies would break the PT ***,even for an inadequately fast measurement frequency,if the measurement strength is sufficiently strong,the PT symmetry breaking can *** current work can enhance our knowledge of quantum measurement and symmetry and may inspire further research on the effect of quantum measurement on symmetry.

关键词： quantum measurement PT-symmetry ion trap

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Realizing adiabatic quantum search algorithm with shortcut to adiabaticity in ion trap system

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Realizing adiabatic quantum search algorithm with shortcut t...

Manoeuvring ions in microscopic surface electrode ion traps

第十八届全国量子光学学术会议

作者：张杰 Yi Xie Chun-wang Wu bao-quan ou Wei Wu Pingxing Chen 国防科大 Department of Physics National University of Defense Technology

In this paper we report an experimental implementation of adiabatic search algorithm on a two-bit data base with shortcut to adiabaticity（STA） in an ion trap system. Initially the data base is created by applying a pi/2 laser pulse on a single qubit, and following the driving Hamiltonian leads the system evolving from data base to target state. To speed up the searching process and force the system evolution to follow the adiabatic path, we use the STA method which suppresses the non-adiabatic transitions and shortens the searching time by at least 4 times compared to the conventional adiabatic method. In our experiment target state is searched with fidelity better than 98%.

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Manoeuvring ions in microscopic surface electrode ion traps

A versatile synthetic strategy towards rare earth based metal-organic frameworks

第十七届全国量子光学学术会议

作者：张鑫方 bao-quan ou Yi Xie Chen Ting Wen-bo Wu Chun-wang Wu Ting Zhang Zhi-jiao Deng Ping-xing Chen 国防科学技术大学 College of Science of National defense science and technology university

＜正＞The experience of surface-electrode ion traps is ***,the non-classical of ions heating rate in the trapped ion,which can reflect the performance of ion trap important ***,the classical motion of multiple ions:split one string into two parts,and vise *** direct current（DC）control voltages was analyzed and the probale heating mechanics is discussed

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Science China Chemistry 2025年

作者： quan Shi Yun-Hao Xu Ming-Hui Chen Peng Zhao Wen-Bo Deng Ji Xiong Kai Guo Ya-Qing Feng bao Zhang School of Chemical Engineering and Technology Tianjin University Tianjin Collaborative Innovation Center of Chemical Science and Engineering Guangdong Laboratory Chemistry & Fine Chemical Industry Jieyang Center

Rare earth metal-organic frameworks (RE-MOFs) have drawn wide attention owing to diverse network structures and various application ***,due to the unpredictable formation of the nodes,it is still challenging to design novel RE-MOFs.A novel versatile strategy was developed employing a RE-acetate complex (RE2(CH3COO)6·4H2O) as a precursor to construct RE-MOFs.2D RE-MOFs (RE-DBP) and 3D RE-MOFs (RE-TCPP) could be obtained by using dicarboxylic porphyrin ligands H2DBP and tetracarboxylic porphyrin ligands H2TCPP,*** RE-MOFs were further synthesized to verify the universality of the *** crystalline RE-MOFs could also be prepared at room temperature via the developed strategy,which could significantly promote large-scale preparation and practical application of *** proof of the concept,the performance of porphyrin-based RE-MOFs was investigated in the photocatalytic cycloaddition of CO2with *** the RE-DBP(Co) MOFs,Tb-DBP(Co) exhibited the best photocatalytic performance,which was also greater than that of the corresponding 3D MOF Tb-TCPP(Co) due to the optimal 2D structure and thus the accelerated photogenerated charge separation and transfer *** work not only provides a novel versatile strategy to design and develop RE-MOFs,but also proposes a promising approach for the potential bulk production of RE-MOFs at room temperature.

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Positive effect of Mo on mechanical properties of a Ni-42W-10Co-x Mo medium heavy alloy

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China Foundry 2025年

作者： Guo-xin Cao Jian-xin Dong Yong-sheng He He Jiang Fang Hao Zhi-hua Nie Teng-fei Ma bao-quan Fu School of Materials Science and Engineering University of Science and Technology Beijing Xi'an Superalloy Technology Co. Ltd. School of Materials Science and Engineering Beijing Institute of Technology Key Laboratory of Air-driven Equipment Technology of Zhejiang Province Quzhou University

In this study,a novel Ni-W-Co-Mo medium heavy alloy (MHA) was designed to improve its mechanical strength via Mo *** the Ni-42W-10Co-xM o alloy series,where x represents the weight percent of Mo and varies between 0,1,2,5,and 10,the microstructure transitions from a dendritic structure to a hypoeutectic structure as the Mo content increases from 0 to 5wt.%.Moreover,as the Mo content increases from 0to 10wt.%,the distribution of theμ-phase shifts from being individually dispersed to forming aggregates,and its volume fraction rises from 0.5%to 7.9%.Notably,theμ-phase evolves into an eutectic microstructure,which helps in minimizing the segregation of *** change is accompanied by a substantial enhancement in mechanical properties;specifically,the compressive yield strength at room temperature increases from 350 MPa to 646 MPa,indicating a significant 85%***,the microhardness increases from 230 HV to 304 *** dynamics simulations further reveal that the strengthening mechanism of Ni-42W-10Co-xM o alloys is Mo-induced solid solution strengthening and precipitation strengthening.

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Regularity Condition of Solutions to the Quasi-geostrophic Equations in Besov Spaces with Negative Indices

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Acta Mathematicae Applicatae Sinica 2010年第3期26卷 381-386页

作者： bao-quan Yuan School of Mathematics and Information Science Henan Polytechnic University Henan 454000 China

With a Hǒlder type inequality in Besov spaces, we show that every strong solution θ（t, x） on （0, T ） of the dissipative quasi-geostrophic equations can be continued beyond T provided that ⊥θ（t, x） ∈L 2γ/... 详细信息

关键词： Quasi-geostrophic equations regularity conditions Besov spaces

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Mechanism of action of Linggui Zhugan Decoction in treating non-alcoholic fatty liver disease using untargeted metabolomics approach

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Traditional Medicine Research 2025年第2期10卷 65-76页

作者： Huan Pei Ren-Lin Li Xin-Ran Song Qian-Qian Wan Yu-Ming Wang Han-Zhou Li Wei-quan Xu Jia-bao Liao Wei-Bo Wen Jing Miao Huan-Tian Cui School of Basic Medicine Yunnan University of Chinese MedicineKunming 650599China School Clinical Medical College Yunnan University of Chinese MedicineKunming 650599China First School of Clinical Medicine Yunnan University of Chinese MedicineKunming 650599China School of Integrative Chinese and Western Medicine Tianjin University of Traditional Chinese MedicineTianjin 301617China Department of Pharmacy Tianjin Second People's HospitalTianjin 300192China

Background:Non-alcoholic fatty liver disease(NAFLD)is a liver disorder characterized by the accumulation and degeneration of fat in the liver cells,a condition that may further deteriorate and lead to cirrhosis and liver *** studies showed that metabolic dysfunction can promote NAFLD *** Zhugan Decoction(LGZGD)has therapeutic effects on *** mechanism of LGZGD still remains *** study was to examine the impact of LGZGD on the metabolic processes involved in the development of ***:A mice model of NAFLD was treated with *** therapeutic potential of LGZGD was evaluated by assessing the activity of transaminases,lipids levels of blood,and pathological changes in the liver of the mice model of ***,this study also evaluated the influence of LGZGD on liver inflammation and oxidative ***:The results of untargeted metabolomics analysis showed that LGZGD reduced the disordered lipid metabolism in NAFLD *** improved the oxidative stress and also reduced the levels of pro-inflammatory cytokines in the *** metabolomics analysis of liver samples revealed that LGZGD treatment improved metabolic disorders,including alanine,aspartate,glutamate,glycerophospholipid metabolism,and citrate *** RT-qPCR and Western blot results showed that LGZGD could regulate the expression of key enzymes in the metabolic pathway of the citrate cycle,including ATP-citrate lyase(ACLY),alanine-glyoxylate aminotransferase-2(AGXT2),phosphatidylethanolamine N-methyltransferase(PEMT),and succinate dehydrogenase(SDH).Conclusion:We found that LGZGD can treat NAFLD by reducing inflammatory responses,inhibiting oxidative stress,regulating alanine,aspartate,glutamate,and glycerophospholipid metabolism,and citrate cycle pathways.

关键词： NAFLD LGZGD untargeted metabolomics glycerophospholipid metabolism citrate cycle

The Dissipative Quasi-geostrophic Equation in Weak Morrey Spaces

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Acta Mathematica Sinica,English Series 2008年第2期24卷 253-266页

作者： bao quan YUAN School of Mathematics and Informatics He'nan Polytechnic University Jiaozuo 454000 P. R. China

The author studies the Cauchy problem of the dissipative quasi-geostrophic equation in weak Morrey spaces. The global well-posedness is established for any small initial data in the weak space Mp^＊,γ（R^n）, with 1... 详细信息

关键词： dissipative quasi-geostrophic equation weak Morrey spaces global well-posedness

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AN ENERGY-STABLE PARAMETRICFINITE ELEMENT METHOD FOR SIMULATING SOLID-STATE DEWETTING PROBLEMS INTHREE DIMENSIONS

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Journal of Computational Mathematics 2023年第4期41卷 771-796页

作者： Weizhu bao quan Zhao Department of Mathematics National University of SingaporeSingapore119076

We propose an accurate and energy-stable parametric finite element method for solving the sharp-interface continuum model of solid-state dewetting in three-dimensional *** model describes the motion of the film/vapor interface with contact line migration and is governed by the surface diffusion equation with proper boundary conditions at the contact *** present a weak formulation for the problem,in which the contact angle condition is weakly *** using piecewise linear elements in space and backward Euler method in time,we then discretize the formulation to obtain a parametric finite element approximation,where the interface and its contact line are evolved *** resulting numerical method is shown to be well-posed and unconditionally ***,the numerical method is generalized to the case of anisotropic surface energies in the Riemannian metric *** results are reported to show the convergence and efficiency of the proposed numerical method as well as the anisotropic effects on the morphological evolution of thin films in solid-state dewetting.

关键词： Solid-state dewetting Surface diffusion Contact line migration Contact angle Parametric finite element method Anisotropic surface energy