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Entanglement purification for memory nodes in a quantum network

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Science China(Physics,Mechanics & Astronomy) 2020年第2期63卷 47-54页

作者： guanyu wang GuiLu Long State Key Laboratory of Low-Dimensional Quantum Physics and Department of Physics Tsinghua UniversityBeijing 100084China Tsinghua National Laboratory of Information Science and Technology Beijing 100084China Collaborative Innovation Center of Quantum Matter Beijing 100084China

The entanglement between quantum memory nodes is a prerequisite in a quantum network, and the diamond nitrogen-vacancy(NV) center is a promising candidate serving as a quantum memory node. Here, we investigate the possibility of achieving an entanglement purification protocol(EPP) for entangled NV centers in distant diamonds. To construct the EPP, we design a nondestructive parity-check detector(PCD) utilizing an auxiliary polarization-entangled photon pair, which makes our EPP less time consuming and insensitive to the phase fluctuation of the optical path length. The satisfied fidelity of an NV center pair after purification and efficiency of obtaining a purified NV center pair with our EPP can be obtained with current experimental techniques in the realistic condition. This EPP is useful for a quantum network in which NV centers are used as quantum memory nodes.

关键词： entanglement purification memory nodes quantum network nitrogen-vacancy center system parity-check detectors

Testing the leanocentric locking-point theory by in silico partial lipectomy

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Quantitative Biology 2021年第1期9卷 73-83页

作者： guanyu wang Department of Biology School of Life SciencesSouthern University of Science and TechnologyShenzhen 518055China Guangdong Provincial Key Laboratory of Computational Science and Material Design Shenzhen 518055China

Background:The lipostatic set-point theory,ascribing fat mass homeostasis to leptin mediated central feedback regulation targeting the body9s fat storage,has caused a variety of *** recently proposed a leanocentric locking-point theory and the corresponding mathematical model,which not only resolve these conundrums but also provide valuable insights into weight control and health *** paper aims to further test the leanocentric ***:Partial lipectomy is a touchstone to test both the leanocentric and lipostatic *** we perform in silico lipectomy by using a mathematical model embodying the leanocentric theory to simulate the long-term body fat change after removing some fat cells in the ***:The mathematical modeling uncovers a phenomenon called post-surgical fat loss,which was well-documented in real partial lipectomy surgeries;thus,the phenomenon can serve as an empirical support to the leanocentric *** the other hand,the leanocentric theory,but not the lipostatic theory,can well explain the post-surgical fat ***:The leanocentric locking-point theory is a promising theory and deserves further *** lipectomy surgeries are beneficial to obese patients for quite a long period.

关键词： leanocentric locking-point theory lipostatic set-point theory weight stability fat mass homeostasis partial lipectomy

Global quantitative biology can illuminate ontological connections between diseases

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Frontiers of Electrical and Electronic Engineering in China 2017年第2期5卷 191-198页

作者： guanyu wang Department of Biology Southern University of Science and Technology Shenzhen 518055 China

Owing to its interdisciplinary nature, quantitative biology is playing ever-increasing roles in biological researches. To make quantitative biology even more powerful, it is important to develop a holistic perspective by integrating information from multiple biological levels and by considering related biocomplexity simultaneously. Using complex diseases as an example, I show in this paper how their ontological connections can be revealed by considering the diseases on a common ground. The obtained insights may be useful to the prediction and treatment of the diseases. Although the example involves only with cancer and diabetes, the approaches are applicable to the study of other diseases, or even to other biological problems.

关键词： quantitative biology disease modeling systems biology nonlinear dynamics

Hole mobility of strained Si/(001)Si_(1-x)Ge_x

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Science China(Physics,Mechanics & Astronomy) 2012年第1期55卷 48-54页

作者： wang XiaoYan ZHANG HeMing MA JianLi wang guanyu QU JiangTao Key Laboratory for Wide Band-Gap Semiconductor Materials and Devices School ofMicroelectronics Xidian University Xi＇an 710071 China Department of Electron and Electricity Engineering Baoji University of Arts and Sciences Baoji 721007 China

The hole mobility of strained silicon along the orientation on (001) Si1?xGex is obtained by solving collision term in the Boltzmann transport equation. The analytical model is proposed that considers the effect of strain-induced splitting at valence band valleys in silicon, doping dependence and three scattering mechanisms, i.e., ionized impurity scattering, acoustic phonon scattering and non-polar optical phonon scattering. The hole occupancy at top band indicates a non-monotonic variation under biaxial tensile strain at low temperature (77 K). What's more, a non-monotonic variation of hole mobility at room temperature (300 K) is presented. Compared with the room temperature hole mobility, the low temperature hole mobility is affected greatly by ionized impurity scattering at lower impurity concentration. At the same time, the room temperature hole mobility is lower than that of electron with the same germanium content and doping concentration. If the parameters are correctly chosen, the model can also be used to calculate the hole mobility of other crystal faces with arbitrary orientation. So, it lays a useful foundation for strained silicon devices and circuits.

关键词： subband hole occupancy scattering model germanium content hole mobility

Single titanium-oxide species implanted in 2D g-CsN4 matrix as a highly efficient visible-light CO2 reduction photocatalyst

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Nano Research 2019年第2期12卷 457-462页

作者： Shangfeng Tang Xuepeng Yin guanyu wang Xiuli Lu Tongbu Lu Institute for New Energy Materials & Low Carbon Technologies School of Materials Science and Engineering Tianjin University of Technology Tianjin 300384 China

A visible-light-response, efficie nt and robust photo-catalyst for CO2 reduction is highly desirable. Herein, we demonstrate that single titanium-oxide species impla nted in two-dime nsion al (2D) graphitic carb on n itride (g-C3N4) matrix (2D TiO-CN) can efficie ntly photo-catalyze the reduction of CO2 to CO under the irradiation of visible light. The synergistic interaction between single titanium oxide species and g-C3N4 in 2D TiO-CN not only enhances the separation of photo-excited charges, but also results in visible light response of single titanium-oxide species, realizing high activity of CO2 photo-reduction with extremely high CO generation rate of 283.9 pmol·h^-1·g^-1, 5.7, 6.8 and 292.2 times larger than those of TQ2/CN hybrid material, CN and commercial TiO2, respectively. Time-resolved fluoresce nee and electron spin resonance spectroscopy revealed the catalytic mechanism of the fabricated 2D TiO-CN photocatalysts for CO2 reduction.

关键词： single atom catalyst graphitic carbon nitride two-dimensional (2D) photocatalysts visible-light CO2 reduction

Hole mobility enhancement of Si by rhombohedral strain

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Science China(Physics,Mechanics & Astronomy) 2012年第8期55卷 1399-1403页

作者： SONG JianJun ZHANG HeMing HU HuiYong wang XiaoYan wang guanyu Key Lab of Wide Band-Gap Semiconductor Materials and Devices School of Microelectronics Xidian University Xi'an 710071 China

The strain technology is an effective way to improve hole mobility and CMOS device performance. Tetragonal strain leading to hole mobility enhancement in strained Si （001） has been verified by two aspects of theories and experiments. In this paper, we aim to study rhombohedral strain effect on the hole mobility of Si, which results from growing on the （111） oriented re- laxed Sil_xGex substrate. It is found that structure transformation of Si from cubic to trigonal system occurs under the biaxial tensile stress imposed by the （111） substrate and that its corresponding averaged hole mobility increases about one time at most in comparison with one of unstrained Si. The results can provide valuable reference to the understanding of the strained Si ma- terial physics and its design.

关键词： strained Si band structure scattering, mobility model

Synergistic realization of high efficiency solar desalination and carbon dioxide reduction

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Nano Research 2023年第7期16卷 10530-10536页

作者： Xiaoying Song Pei wang Yi Huang Xiaoqiang Zhu U-Fat Chio Fang wang guanyu wang Wei wang Bin Liu School of Optoelectronic Engineering Chongqing University of Posts and TelecommunicationsChongqing 400065China Chongqing Institute of Green and Intelligent Technology Chinese Academy of ScienceChongqing 400714China School of Electronic Science and Engineering Nanjing UniversityNanjing 210093China

Methods of seawater desalination and carbon dioxide(CO_(2))reduction using clean and renewable energy have attracted much attention withing the reducing fresh water and growing CO_(2)***,we propose a synergistic method for solardriven desalination and CO_(2)reduction at the surface of sea using a three-dimensional titanium oxide-gold semiconductor/metal(TiO_(2)-Au NW/NPs(NW:nanowire,NP:nanoparticle))photothermal conversion membrane that can efficiently harvest a broad solar spectrum(200 to 2500 nm,94%)to undertake the conversion of light-to-heat and *** TiO_(2)-Au NW/NPs membrane demonstrated a high solar vapor conversion efficiency of~90%,CO_(2)reduction yields of 0.066μmol·cm^(-2)CH_(4)and 0.015μmol·cm^(-2)CO within 5 *** addition,the membrane efficiently evaporated seawater with different salt concentrations to produce drinking water which meet World Health Organization(WHO)and US Environmental Protection Agency(EPA)*** work provides an integrated solution for solar desalination and CO_(2)reduction at the surface of sea to reduce the harm to marine life caused by ocean acidification while producing pure water.

关键词： solar desalination CO_(2)reduction titanium oxide nanowires gold nanoparticles

Design of high frequency broadband low insertion loss SAW filter at 3.5 GHz

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The Journal of China Universities of Posts and Telecommunications 2024年第2期31卷 55-61页

作者： wang Wei Zhang Ying wang Fang Wu Hao Ding Hui Xia Xu wang guanyu Xie Yingtao School of Optoelectronics Engineering/International Semiconductor College Chongqing University of Posts and TelecommunicationsChongqing 400065China

With the wide application of the fifth-generation mobile communication system(5G)technology,wireless communication equipment tends to develop in miniaturization,high frequency,and low *** this paper,a surface acoustic wave(SAW)filter with a center frequency of 3.5 GHz was ***,the acoustic waveguide structure of the longitudinal leaky SAW(LLSAW)excitation is determined,and the two-dimensional(2D)theoretical model of the device is established by COMSOL ***,the influence of electrode parameters on the performance of the device is studied,and the electrode parameters are optimized on this *** setting the device structure parameters reasonably,the spurious in the passband can be effectively ***,the center frequency of the mirror T-structure LLSAW filter is 3.536 GHz,the insertion loss is-1.414 dB,the bandwidth of-3 dB is 276 MHz,and the out-of-band rejection is greater than-30 dB.

关键词： surface acoustic wave(SAW) electrode spurious response mirror T-structure

Renshen(Radix Ginseng) polysaccharide promotes repair of the mice intestinal mucosa through regulatory mechanisms based on polyamine and human antigen R

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Journal of Traditional Chinese Medicine 2024年第6期44卷 1118-1126页

作者： wang guanyu DAI Xingzhen LIU Yiting ZHU Zeming HU Ling LI Ruliu Science and Technology Innovation Center Guangzhou University of Chinese MedicineGuangzhou 510405China

OBJECTIVE: To investigate the mechanism and effect of Renshen(Radix Ginseng) polysaccharide on the migration of intestinal epithelial cell line 6(IEC-6), as well as the repair mechanism of Renshen(Radix Ginseng) polysaccharide on colonic injury induced by dextran sulfate sodium(DSS) in mice. METHODS: Mice were fed 3%(w/v) DSS for 6 d to create colonic lesions. A cell-migration model was created using cell scratching. m RNA expression, protein expression, translation efficiency of m RNA, and nucleoplasmic distribution of human antigen R(Hu R) were determined by real-time reverse transcription-quantitative polymerase chain reaction, western blotting, a dual luciferase reporter system, and immunofluorescence staining, respectively. RESULTS: Renshen(Radix Ginseng) polysaccharide promoted the migration of IEC-6 cells and affected expression of stromal interaction molecule 1(STIM1) and cell division cycle 42(Cdc42) at transcriptional and posttranscriptional levels. CONCLUSIONS: Renshen(Radix Ginseng) polysaccharideinduced repair of intestinal mucosal injury may be mediated by increased cell migration via polyaminebased regulatory mechanisms. In vitro and in vivo experiments suggest that Renshen(Radix Ginseng) polysaccharide-induced post-transcriptional regulation of STIM1 and Cdc42 may be related to differences in the regulation of different target genes by Hu R. Taken together, these data provide a reference for further exploration of the protective effect of Renshen(Radix Ginseng) on the intestinal mucosa.

关键词： Renshen(Radix Ginseng) polysaccharides human antigen R post-transcriptional regulation cell movement intestinal mucosal damage repair