作者机构：
[Jans, E; van Veghel, M; Hulsbergen, W; Biolchini, A; Koppenburg, P; Galati, M D; Greeven, L M; Merk, M; Lukashenko, V; Heijhoff, K; Pellegrino, A; de Boer, J; Magdalinski, D; Kostiuk, I; Ketel, T; Sanchez Gras, C; Graziani, G; Kotriakhova, S; Aaij, R; Ferreres Sole, S; Snoch, A; Gabriel, E; Tuning, N; Bizzeti, A; Akiba, K; Geertsema, R E] Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands;[Xu, M; Pagare, B; Grazette, L; Abdelmotteleb, A S W; Muhammad, E; Monk, M; Rabadan Trejo, R I; Zhovkovska, V; Ward, J A; Paolucci, L; Davidson, A; Lehuraux, M; Wiederhold, A R; Swystun, F; Henderson, R D L; Latham, T; Beck, A; Gershon, T; Graziani, G; Kotriakhova, S; Ramos Pernas, M; Blake, T; Cicala, M F; Bizzeti, A; Jones, T P; Vesterinen, M; Hunter, R J; Back, J J; Kreps, M; Abudinén, F] Department of Physics, University of Warwick, Coventry, United Kingdom;[Mathad, A; Bezshyiko, Ia; Owen, P; Serra, N; Buonaura, A; Andersson, M; Bellee, V; Steinkamp, O; Abellan Beteta, C; Andreola, P; Müller, K; Esen, S; Ferrillo, M; Denysenko, V; Graziani, G; Kotriakhova, S; Lancierini, D; Craik, D C; De Simone, D; Eschle, J; Bernet, R; Bizzeti, A; Terentev, A; Betancourt, C] Physik-Institut, Universität Zürich, Zürich, Switzerland;[Hennessy, K; Ackernley, T; Chadwick, A J; Harrison, T; Bowcock, T J V; Hutchcroft, D; Brown, J; Naik, P; Chavez Barajas, C A; Howarth, N; Vilella Figueras, E; Rinnert, K; Marshall, P J; Shears, T; Graziani, G; Kotriakhova, S; Halewood-Leagas, T; Hammerich, J; Casse, G; Bizzeti, A; Scherl, S; Rodrigues, E] Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom;[Prouve, C; López Soliño, S; Rodriguez Rodriguez, E; Gallas Torreira, A; Vazquez Regueiro, P; Lomba Castro, J; Rodriguez Fernandez, E; Baladron Rodriguez, P; Fernandez Gomez, M; Vázquez Sierra, C; Corredoira, I; Romero Lamas, M; Chobanova, V; Adeva, B; Brossa Gonzalo, A; Cid Vidal, X; Pereiro Castro, A; Cambon Bouzas, J; Santamarina Rios, C; Plo Casasus, M; Dalseno, J; Novoa Fernandez, J; Graziani, G; Kotriakhova, S; Brea Rodriguez, A; Sellam, S; Carcedo Salgado, L; Romero Vidal, A; Van Hulse, C B; Belin, S; Garcia Plana, B; Eirea Orro, C; Bizzeti, A; Martinez Santos, D; Saborido Silva, J J; Ruiz Fernandez, R A; Landesa Gomez, C; Morcillo Gomez, A] Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
摘要：
The production rate of Λ_{b}^{0} baryons relative to B^{0} mesons in pp collisions at a center-of-mass energy sqrt[s]=13 TeV is measured by the LHCb experiment. The ratio of Λ_{b}^{0} to B^{0} production cross sections shows a significant dependence on both the transverse momentum and the measured charged-particle multiplicity. At low multiplicity, the ratio measured at LHCb is consistent with the value measured in e^{+}e^{-} collisions, and increases by a factor of ∼2 with increasing multiplicity. At relatively low transverse momentum, the ratio of Λ_{b}^{0} to B^{0} cross sections is higher than what is measured in e^{+}e^{-} collisions, but converges with the e^{+}e^{-} ratio as the momentum increases. These results imply that the evolution of heavy b quarks into final-state hadrons is influenced by the density of the hadronic environment produced in the collision. Comparisons with several models and implications for the mechanisms enforcing quark confinement are discussed.
期刊：
Microwave and Optical Technology Letters,2024年66(1):e33954- ISSN：0895-2477
通讯作者：
Jin, J
作者机构：
[Ma, Li; Liu, Wei] Tianjin Univ, Sch Microelect, Tianjin, Peoples R China.;[Zhang, Qi-Jun] Carleton Univ, Dept Elect, Ottawa, ON, Canada.;[Jin, Jing] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan, Peoples R China.;[Zhang, Jianan] Southeast Univ, State Key Lab Millimeter Waves, Nanjing, Peoples R China.
通讯机构：
[Jin, J ] C;Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan, Peoples R China.
关键词：
electromagnetic;finite element method;Padé via Arnoldi;single-size simplification
摘要：
Abstract This paper proposes a new Padé via Arnoldi algorithm with single‐size matrix simplification for electromagnetic (EM) fast frequency sweep. New equations are derived to reduce the double‐size system matrix to single‐size system matrix. We also propose a systematic algorithm to calculate S‐parameters using the simplified single‐size system matrix. Using the proposed algorithm, the EM responses can be obtained with the same accuracy while consuming much less time compared with that using the existing double‐size matrix Padé via Lanczos. The proposed algorithm is demonstrated by two microwave examples.
作者机构：
State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing , China;Frontier Science Center for Quantum Information, Beijing , China;e-mail: ycliu@tsinghua.edu.cn;Department of Physics, Huazhong Normal University, Wuhan , China;e-mail: gaox@mail.ccnu.edu.cn
关键词：
光学期刊,光学期刊联盟,光学论文,光电资讯,光电社区,光学人物,光学专家,光学实验室,光学文献,编辑出版,光学权威,光学前沿,光学会议,微信智能应答服务,光学资源库,DOI代理注册,高功率激光,High Power Laser Science and Engineer,光子学研究,Photonics Research,中国光学快报,COL,Chinese Optics Letters,光学学报,中国激光,激光与光电子学进展
摘要：
Subnatural-linewidth single photons are of vital importance in quantum optics and quantum information science. According to previous research, it appears difficult to utilize resonance fluorescence to generate single photons with subnatural linewidth. Here we propose a universally applicable approach to generate fluorescent single photons with subnatural linewidth, which can be implemented based on Λ-shape and similar energy structures. Further, the general condition to obtain fluorescent single photons with subnatural linewidth is revealed. The single-photon linewidth can be easily manipulated over a broad range by external fields, which can be several orders of magnitude smaller than the natural linewidth. Our study can be easily implemented in various physical platforms with current experimental techniques and will significantly facilitate the research on the quantum nature of resonance fluorescence and the technologies in quantum information science.
摘要：
The main goal of this paper is to investigate the predefined-time sliding mode control and synchronization of uncertain hyperchaotic systems and its application in secure communication. Firstly, a novel predefined-time sliding surface is designed. Then a predefined-time sliding mode controller is proposed for uncertain hyperchaotic systems, which can guarantee synchronization of the master-slave system within a predefined time in the presence of parameter uncertain and external disturbance. Specially, the settling time, as a part of control parameters, can be predefined as needed independent of initial conditions. Furthermore, the validity of the proposed approach is proved by Lyapunov stability theory. Finally, comparative tests and image encryption application are given to show advantages of the proposed method.
期刊：
EUROPEAN PHYSICAL JOURNAL PLUS,2024年139(3):1-7 ISSN：2190-5444
通讯作者：
Zhang, ZQ
作者机构：
[Zhang, Zi-qiang; Zhang, ZQ] China Univ Geosci, Sch Math & Phys, Wuhan 430074, Peoples R China.;[Hou, De-fu] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China.
通讯机构：
[Zhang, ZQ ] C;China Univ Geosci, Sch Math & Phys, Wuhan 430074, Peoples R China.
摘要：
Using the AdS/CFT correspondence, we study finite 't Hooft coupling corrections on the instantaneous energy loss of light quarks within shooting string. We consider the first higher-derivative corrections to the supergravity theory, which are R4\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$R<^>4$$\end{document} terms in the gravity action. It turns out that the energy loss decreases with decreasing lambda\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\lambda$$\end{document} ('t Hooft coupling constant), in agreement with previous findings of the light quarks energy loss obtained from the jet quenching parameter and stopping distance. In addition, we discuss how the energy loss changes with the shear viscosity to entropy density ratio at strong coupling.
作者机构：
[Chang, Wen-Bin] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.;Cent China Normal Univ, Key Lab Quark & Lepton Phys MOS, Wuhan, Peoples R China.
通讯机构：
[Chang, WB ] C;Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
摘要：
In this study, we utilize the complexity-action duality to study the evolution of complexity in a holographic QCD model at finite temperature and chemical potential. By inserting a fundamental string as a probe, we investigated the properties of complexity growth in this Einstein-Maxwell-scalar gravity system, which is affected by the string velocity, chemical potential, and temperature. Our results show that the complexity growth is maximized when the probe string is stationary, and it decreases as the velocity of the string increases. When the string approaches relativistic velocities, the complexity growth always increases monotonically with respect to the chemical potential. Furthermore, we find that the complexity growth can be used to identify phase transitions and crossovers in the model.
期刊：
EUROPEAN PHYSICAL JOURNAL C,2024年84(3):1-13 ISSN：1434-6044
通讯作者：
Sheng, XL
作者机构：
[Hou, Defu; Sheng, Xin-Li; Yang, Shu-Yun; Zou, Yao-Lin; Sheng, XL] Cent China Normal Univ, Key Lab Quark & Lepton Phys, MOE, Wuhan 430079, Peoples R China.;[Hou, Defu; Sheng, Xin-Li; Yang, Shu-Yun; Zou, Yao-Lin; Sheng, XL] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.;[Sheng, Xin-Li; Sheng, XL] INFN, Sez Firenze, Via G Sansone 1, I-50019 Florence, Italy.
通讯机构：
[Sheng, XL ] C;Cent China Normal Univ, Key Lab Quark & Lepton Phys, MOE, Wuhan 430079, Peoples R China.;Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.;INFN, Sez Firenze, Via G Sansone 1, I-50019 Florence, Italy.
摘要：
Based on the Nambu–Jona–Lasinio (NJL) model, we develop a framework for calculating the spin alignment of vector mesons and applied it to study
$$\phi $$
mesons in a magnetic field. We calculate mass spectra for
$$\phi $$
mesons and observe mass splitting between the longitudinally polarized state and transversely polarized states. The
$$\phi $$
meson in a thermal equilibrium system is preferred to occupy the state with spin
$$\lambda =0$$
than those with spin
$$\lambda =\pm 1$$
, because the former state has a smaller energy. As a consequence, we conclude that the spin alignment will be larger than 1/3 if one measures along the direction of the magnetic field, which is qualitatively consistent with the recent STAR data. Around the critical temperature
$$T_{C}=150~\hbox {MeV}$$
, the positive deviation from 1/3 is proportional to the square of the magnetic field strength, which agrees with the result from the non-relativistic coalescence model. Including the anomalous magnetic moments for quarks will modify the dynamical masses of quarks and thus affect the mass spectra and spin alignment of
$$\phi $$
mesons. The discussion of spin alignment in the NJL model may help us better understand the formation of hadron’s spin structure during the chiral phase transition.
摘要：
A low-profile coding metasurface based on beam diffusion and absorption is proposed, which can be applied for broadband Radar Cross section (RCS) reduction. Through inserting resistors into the polarization conversion element, the proposed unit cell can convert a portion of the electromagnetic wave to ohmic loss as well as retain polarization conversion. Subsequently, the power loss and surface current were used to explain the mechanism of absorption and polarization conversion, and the arrangement of the elements was optimized using a simulated annealing algorithm. Furthermore, both the simulated and measured results have shown that the RCS reduction is greater than 10 dB at 6.7-19.3 GHz (the relative bandwidth is 96.9%), and the metasurface still maintains great characteristics at 45 degrees incidence. Thanks to the proposed metasurface offer advantages such as fewer resistors, a wider bandwidth for RCS reduction, an ultra-thin profile (0.066 lambda L, where lambda L represents the longest wavelength), a stable incident angle, and a more uniform scattering of energy, it can be used in electromagnetic stealth for large targets.
摘要：
This paper proposes a bifunctional linear-to linear polarization converter with a sandwich structure that enables transmissive and reflective polarization conversions in different operating bands, simultaneously. The unit cell of the converter metasurface comprises an S-shaped wire, a dielectric slab, and an S-shaped slot, where the S-shaped wire and slot have complementary structures and a 30 degrees difference in orientation. When an x-polarized electromagnetic wave is incident on the proposed metasurface, most of the transmitted wave is y-polarized in the frequency range of 7.07 GHz to 7.46 GHz, while most of the reflected wave is y-polarized in the frequency range of 16.59 GHz to 16.91 GHz. The physical mechanism underlying these two types of polarization conversions was analyzed based on the surface current, and electric field distributions. Notably, the transmissive polarization conversion was primarily attributed to magnetic resonance, while its reflective counterpart was ascribed to electric resonance. In addition, the Jones vector and Stokes parameters were analyzed thereby elucidating the polarization characteristics of the proposed metasurface. Furthermore, simulation data demonstrated excellent agreement with the measured results of polarization conversion. The designed metasurface will promote subsequent research on bifunctional polarization converters.
期刊：
Machine Learning: Science and Technology,2024年5(1) ISSN：2632-2153
通讯作者：
Li, W
作者机构：
[Liu, Feiyi; Li, W; Wang, Yanyang; Li, Wei; Shen, Jianmin] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China.;[Liu, Feiyi; Li, W; Wang, Yanyang; Li, Wei; Shen, Jianmin] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.;[Liu, Feiyi] Eotvos Lorand Univ, Inst Phys, 1-A Pazmany P Setany, H-1117 Budapest, Hungary.;[Shen, Jianmin] Baoshan Univ, Coll Engn & Technol, Baoshan, Peoples R China.
通讯机构：
[Li, W ] C;Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China.;Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
关键词：
machine learning;non-equilibrium phase transitions;branching annihilating random walks;convolutional neural networks;autoencoder
摘要：
Machine learning (ML) of phase transitions (PTs) has gradually become an effective approach that enables us to explore the nature of various PTs more promptly in equilibrium and nonequilibrium systems. Unlike equilibrium systems, non-equilibrium systems display more complicated and diverse features because of the extra dimension of time, which is not readily tractable, both theoretically and numerically. The combination of ML and most renowned nonequilibrium model, directed percolation (DP), led to some significant findings. In this study, ML is applied to (1+1)-d, even offspring branching annihilating random walks (BAW), whose universality class is not DP-like. The supervised learning of (1+1)-d BAW via convolutional neural networks (CNN) results in a more accurate prediction of the critical point than the Monte Carlo (MC) simulation for the same system sizes. The dynamic exponent z and spatial correlation length correlation exponent nu(perpendicular to) were also measured and found to be consistent with their respective theoretical values. Furthermore, the unsupervised learning of (1+1)-d BAW via an autoencoder (AE) gives rise to a transition point, which is the same as the critical point. The latent layer of AE, through a single neuron, can be regarded as the order parameter of the system being properly re-scaled. Therefore, we believe that ML has exciting application prospects in reaction-diffusion systems such as BAW and DP.
作者机构：
[Xiang Gao; Yong Zhao] Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA;[Andrew D. Hanlon; Swagato Mukherjee; Peter Petreczky] Physics Department, Brookhaven National Laboratory, Bldg. 510A, Upton, New York 11973, USA;Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University, Wuhan 430079, China;RIKEN-BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973;Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11790
摘要：
We present a lattice QCD calculation of the transversity isovector- and isoscalar-quark parton distribution functions (PDFs) of the proton utilizing a perturbative matching at next-to-leading-order (NLO) accuracy. Additionally, we determine the isovector and isoscalar tensor charges for the proton. In both calculations, the disconnected contributions to the isoscalar matrix elements have been ignored. The calculations are performed using a single ensemble of Nf=2+1 highly improved staggered quarks simulated with physical-mass quarks and a lattice spacing of a=0.076 fm . The Wilson-clover action, with physical quark masses and smeared gauge links obtained from one iteration of hypercubic smearing, is used in the valence sector. Using the NLO operator product expansion, we extract the lowest four to six Mellin moments and the PDFs via a neural network from the matrix elements in the pseudo-PDF approach. In addition, we calculate the PDFs in the quasi-PDF approach with hybrid-scheme renormalization and the recently developed leading-renormalon resummation technique, at NLO with the resummation of leading small- x logarithms.
作者：
Wang, Tong;Cui, Jianqun;Chang, Yanan;Huang, Feng;Yang, Yi
期刊：
Electronics,2024年13(5):868- ISSN：2079-9292
通讯作者：
Cui, JQ
作者机构：
[Huang, Feng; Wang, Tong] Cent China Normal Univ, Sch Phys Sci & Technol, 152 Luoyu Rd, Wuhan 430079, Peoples R China.;[Cui, Jianqun; Huang, Feng; Chang, Yanan; Wang, Tong; Cui, JQ] Cent China Normal Univ, Sch Comp Sci, 152 Luoyu Rd, Wuhan 430079, Peoples R China.;[Yang, Yi] NE Illinois Univ, Dept Comp Sci, Chicago, IL 60625 USA.
通讯机构：
[Cui, JQ ] C;Cent China Normal Univ, Sch Comp Sci, 152 Luoyu Rd, Wuhan 430079, Peoples R China.
关键词：
opportunistic mobile networks;energy-efficient;geographic information
摘要：
Opportunistic mobile networks, as an important supplement to the traditional communication methods in unique environments, are composed of mobile communication devices. It is a network form that realizes message transmission by using the opportune encounter of these mobile communication devices. Consequently, mobile communication devices necessitate periodic contact detection in order to identify potential communication opportunities, thereby leading to a substantial reduction in the already limited battery life of such devices. Previous studies on opportunistic networks have often utilized geographic information in routing design to enhance message delivery rate. However, the significance of geographic information in energy conservation has been overlooked. Furthermore, previous research on energy-efficient routing has lacked diversification in terms of the methods employed. Therefore, this paper proposes a dynamic co-operative energy-efficient routing algorithm based on geographic information perception (DCEE-GIP) to leverage geographic information to facilitate dynamic co-operation among nodes and optimize node sleep time through probabilistic analysis. The DCEE-GIP routing and other existing algorithms were simulated using opportunistic network environment (ONE) simulation. The results demonstrate that DCEE-GIP effectively extends network service time and successfully delivers the most messages. The service time of DCEE-GIP increased by 8.05 similar to 31.11%, and more messages were delivered by 14.82 similar to 115.9%.
期刊：
FRONTIERS IN PSYCHOLOGY,2024年15:1287752 ISSN：1664-1078
通讯作者：
Dong, LS
作者机构：
[Dong, Liangshan; Fan, Rong; Dong, LS] China Univ Geosci, Sch Phys Educ, Wuhan, Peoples R China.;[Shen, Bo] Wayne State Univ, Div Kinesiol, Detroit, MI USA.;[Bo, Jin] Eastern Michigan Univ, Dept Psychol, Ypsilanti, MI USA.;[Pang, Yanli] Cent China Normal Univ, Sch Phys Educ, Wuhan, Peoples R China.;[Song, Yu] Ji Mei Univ, Sch Phys Educ, Xiamen, Peoples R China.
通讯机构：
[Dong, LS ] C;China Univ Geosci, Sch Phys Educ, Wuhan, Peoples R China.
关键词：
Children with autism spectrum disorders;typically developing children;Fundamental motor skills;motor deficits;MABC-2
摘要：
Background: Autism Spectrum Disorder (ASD) is a neurodevelopmental condition with unique differences in social interaction, communication, and a spectrum of behavioral characteristics. In the past, motor disturbance in individuals with ASD has not been considered a significant core deficit due to the predominant focus on sociability and communication issues. However, recent studies indicate that motor deficits are indeed associated with the fundamental symptoms of ASD. As there is limited research on the motor behavior of children with ASD, particularly in China, the objective of this study is to investigate the development of fundamental movement skills (FMS) in children with ASD and compare them to typically developing children. Method: The study recruited 108 children with ASD (87 boys, 21 girls) aged 7–10 years from two special education rehabilitation centers in Wuhan, China. For comparison, a control group of 108 typically developing children, matched by age and gender, was randomly selected from three local primary schools. FMS were assessed using the Movement Assessment Battery for Children - Second Edition (MABC-2), which evaluates manual dexterity, aiming and catching, as well as static and dynamic balance. Group differences on MABC-2 percentile scores were analyzed using descriptive statistics and Mann–Whitney U test. Effect sizes were also calculated for practical significance. Results: Findings from the study showed that a significant majority, around 80%, of children with ASD either displayed motor challenges or were at risk of developing such delays. When comparing to their typically developing peers, children with ASD scored notably lower in areas of manual dexterity, ball skills, and both static and dynamic balance (with all these findings being statistically significant at p < 0.001). Interestingly, gender did not show a significant influence on these results (p > 0.05). Conclusion: In addition to addressing the other skill development areas outlined in the diagnostic manual for ASD, clinicians diagnosing and treating children with ASD should also assess the presence of motor skill development. For individuals with ASD who have co-existing motor difficulties, it is essential to offer evidence-based interventions tailored to their specific needs.
摘要：
Due to its controllable maneuverability, wide coverage, and low cost, unmanned aerial vehicle (UAV) has great potential in post-disaster rescue, cargo transport and emergency communication. Considering its limited onboard energy, energy -efficient UAV communication is a challenge. This research examines the security of simultaneous wireless information and power transfer (SWIPT) systems assisted by intelligent reflecting surfaces (IRS) and UAVs while considering the flight energy of rotary-wing UAVs. Specifically, an IRS is mounted on a UAV to enhance the quality of legitimate transmission, and artificial noise (AN) is introduced into the base station (BS) to reduce eavesdropping quality. The power splitting (PS) technology is adopted at ground devices (GDs) to simultaneously decode information and harvest energy. First, we jointly design the BS transmit beamforming, UAV-IRS phase shifts and trajectory/velocity as well as GDs PS ratio with the aim of maximizing the sum secrecy rate of all GDs. Then, an iterative algorithm is developed to address the formulated problem. In particular, additional variables are introduced to handle this complicated objective function, and the original problem is decoupled into multiple sub-problems, which can be solved alternately by invoking the successive convex approximation (SCA) and semidefinite relaxation (SDR) techniques. Finally, numerical results demonstrate that the proposed scheme exhibits a substantial performance in the security rate of SWIPT systems assisted by UAV-IRS, and its performance is improved by at least 12% compared to benchmark schemes at the flight energy budget e(thr) = 5KJ and the number of reflecting elements N-r = 25.
作者机构：
[Wang, Fei; Wang, F; Kong, Deyi] Hubei Univ Technol, Sch Sci, Wuhan 430068, Peoples R China.;[Xu, Jun] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.
通讯机构：
[Wang, F ] H;Hubei Univ Technol, Sch Sci, Wuhan 430068, Peoples R China.
摘要：
We propose a scheme to generate nonreciprocal entanglement between an yttrium iron garnet (YIG) sphere and two nitrogen -vacancy -center ensembles by magnon Kerr effects in a transmission -line resonator. By driving the YIG sphere appropriately, strong Kerr nonlinearities emerge and then induce magnon parametric amplification and magnon frequency shift, resulting in the appearance of optimal entanglements. Depending on the direction of the bias magnetic field, macroscopic nonreciprocal entanglement is realized in this all -solid-state quantum system, which may find potential applications in chiral quantum information processing.
作者：
Zhou, Rui;Chen, Menglin L. N.;Shi, Xintong;Ren, Yan;Yu, Zihao;...
期刊：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION,2024年72(2):2058-2063 ISSN：0018-926X
通讯作者：
Chen, MLN;Lin, H
作者机构：
[Zhou, Rui; Chen, Menglin L. N.] Hong Kong Polytech Univ, Dept Elect & Elect Engn, Hong Kong, Peoples R China.;[Zhou, Rui; Ren, Yan; Yu, Zihao; Lin, Hai; Lin, H; Shi, Xintong] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;[Liu, Y.; Tian, Yu] Hubei Univ, Sch Phys, Dept Phys, Wuhan 430062, Hubei, Peoples R China.;[Liu, Y.] Lanzhou Univ, Lanzhou Ctr Theoret Phys, Key Lab Theoret Phys Gansu, Lanzhou 730000, Gansu, Peoples R China.;[Liu, Y.] Lanzhou Univ, Key Lab Quantum Theory & Applicat MoE, Lanzhou 730000, Gansu, Peoples R China.
通讯机构：
[Lin, H ] C;[Chen, MLN ] H;Hong Kong Polytech Univ, Dept Elect & Elect Engn, Hong Kong, Peoples R China.;Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.
摘要：
Waveguides are fundamental components in communication systems. However, they suffer from reflection and scattering losses at sharp routes or defects. The breakthrough in developing topological photonic crystals (PhCs) provides promising solutions to robust signal transmission. In this work, we propose a new mechanism for protecting wave-guiding modes by decorating the boundaries of a conventional waveguide with valley-Hall PhCs. This special layout enables the robust propagation of conventional transverse electric (TE) waves against defects and bends. Moreover, the proposed waveguide is compatible with the substrate-integrated waveguide (SIW). High-efficient mode conversion from the SIW to the proposed waveguide is achievable. By leveraging the idea of topology to conventional waveguides, we provide a powerful and practical tool that can largely improve the performance of microwave and millimeter-wave integrated circuits while reserving the features of wave-guiding modes.
摘要：
The observational data (e.g., the timing data and magnetic tilt angles chi) of young pulsars can be used to probe some critical issues about the internal physics of neutron stars (NSs), for instance, the number of precession cycles xi and the internal magnetic field configuration (IMFC) of NSs. Evolution of the dipole magnetic field B-d of NSs may play an important role in determining the final results. In this work, a power-law form is adopted to describe the decay of B-d. In such a scenario, the IMFC and xi of young pulsars with an ordinary B-d similar to 1012-1013 G and a steady braking index n are investigated. Since the tilt angle change rates chi(center dot) of pulsars with n < 3 can be theoretically predicted, a test on the power-law decay model can thus be made by comparing the theoretical values to that obtained from observations. However, such a comparison can only be made on the Crab pulsar currently, and the results show that the power-law decay model is inconsistent with the Crab's observations. We suggest that rather than decay, the Crab's B-d should increase with time at a rate similar to 12-14 G/s. A definite conclusion on the validity of the power-law decay model for pulsars with ordinary B-d may be given if chi(center dot) of other pulsars could be measured.
期刊：
BRIEFINGS IN BIOINFORMATICS,2024年25(2) ISSN：1467-5463
通讯作者：
Peng, YH
作者机构：
[Xu, Wang; Peng, Yunhui; Zhang, Houfang; Peng, YH; Zhao, Yunjie] Cent China Normal Univ, Inst Biophys, Wuhan, Peoples R China.;[Xu, Wang; Peng, Yunhui; Zhang, Houfang; Peng, YH; Zhao, Yunjie] Cent China Normal Univ, Dept Phys, Wuhan, Peoples R China.;[Guo, Wenhan] Univ Texas El Paso, Computat Sci Program, El Paso, TX USA.;[Jiang, Lijun] Cent China Normal Univ, Sch Life Sci, Wuhan, Peoples R China.
通讯机构：
[Peng, YH ] C;Cent China Normal Univ, Inst Biophys, Wuhan, Peoples R China.;Cent China Normal Univ, Dept Phys, Wuhan, Peoples R China.
关键词：
histone/nucleosome interaction;interaction network;histone cancer mutation;nucleosome binding mode;epigenetic regulation
摘要：
Nucleosomes represent hubs in chromatin organization and gene regulation and interact with a plethora of chromatin factors through different modes. In addition, alterations in histone proteins such as cancer mutations and post-translational modifications have profound effects on histone/nucleosome interactions. To elucidate the principles of histone interactions and the effects of those alterations, we developed histone interactomes for comprehensive mapping of histone-histone interactions (HHIs), histone-DNA interactions (HDIs), histone-partner interactions (HPIs) and DNA-partner interactions (DPIs) of 37 organisms, which contains a total of 3808 HPIs from 2544 binding proteins and 339 HHIs, 100 HDIs and 142 DPIs across 110 histone variants. With the developed networks, we explored histone interactions at different levels of granularities (protein-, domain- and residue-level) and performed systematic analysis on histone interactions at a large scale. Our analyses have characterized the preferred binding hotspots on both nucleosomal/linker DNA and histone octamer and unraveled diverse binding modes between nucleosome and different classes of binding partners. Last, to understand the impact of histone cancer-associated mutations on histone/nucleosome interactions, we complied one comprehensive cancer mutation dataset including 7940 cancer-associated histone mutations and further mapped those mutations onto 419,125 histone interactions at the residue level. Our quantitative analyses point to histone cancer-associated mutations' strongly disruptive effects on HHIs, HDIs and HPIs. We have further predicted 57 recurrent histone cancer mutations that have large effects on histone/nucleosome interactions and may have driver status in oncogenesis.
