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中国物理B（英文版）
中国物理B（英文版）

欧阳钟灿

月刊

1674-1056

010-82649026 82649519

100080

北京603信箱

中国物理B（英文版）/Journal Chinese Physics　BCSCDCSTPCD北大核心EISCI
查看更多>>该刊与《物理学报》是中国物理学会主办的物理学英文和中文的综合性国际学术月刊。刊登物理学科领域中，国内外未曾公开发表的具有创新性的科学研究最新成果。内容包括物理学各领域的理论、实验技术及应用。两刊内容不重复。两刊以论文水平高、创新性强，发表速度快的特点，受到国内外物理学工作者的好评和关注。被国际著名的SCI等10种以上检索系统收录。曾多次被评为中国科学院优秀期刊一等奖，1999，2003，2005年荣获第一、第二和第三届国家期刊奖，2001年被国家新闻出版总署评为“中国期刊方阵”中的双高（高知名度、高学术水平）期刊。2001，2002，2003年两刊都评为百种中国杰出期刊。
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    Exact quantum dynamics for two-level systems with time-dependent driving

    贺郅程吴奕璇薛正远
    88-95页
    查看更多>>摘要：It is well known that the time-dependent Schrrödinger equation can only be solved exactly in very rare cases,even for two-level quantum systems.Thus,finding the exact quantum dynamics under a time-dependent Hamiltonian is not only fundamentally important in quantum physics but also facilitates active quantum manipulations for quantum information processing.In this work,we present a method for generating nearly infinite analytically assisted solutions to the Schrödinger equation for a qubit under time-dependent driving.These analytically assisted solutions feature free parameters with only boundary restrictions,making them applicable in a variety of precise quantum manipulations.Due to the general form of the time-dependent Hamiltonian in our approach,it can be readily implemented in various experimental setups involving qubits.Consequently,our scheme offers new solutions to the Schrödinger equation,providing an alternative analytical framework for precise control over qubits.
      原文链接:
    • 万方数据
    • 维普

    Enhanced sensing of anharmonicities in a gain-based anti-PT symmetric system

    曾亚伟杨天乐林琪茵苏万钧...
    96-105页
    查看更多>>摘要：We study the enhanced sensing of weak anharmonicities in a gain-based cavity-magnon-waveguide coupled system.By dissipatively coupling the two subsystems through a mediating waveguide,the Hamiltonian of the system is tailored to be anti-parity-time symmetric.Unique to the gain condition,the eigenvalues exhibit two singularities with linewidth suppression,distinguishing them from those of gain-free systems.Under the gain condition,a counter-intuitive bistable signature emerges even at low drive powers.As the effective gain approaches a certain value,this bistability yields a signif-icantly enhanced spin-current response of the magnon mode.Consequently,the sensitivity,quantified by an enhancement factor,is enhanced remarkably compared to the linewidth suppression scenario.Moreover,the high enhancement factor can be sustained over a broad gain-bandwidth and also stays large even when the coherent coupling becomes considerably strong.Based on the integrated cavity-magnon-waveguide systems,this scheme can be used for sensing different physical quantities related to the Kerr-type nonlinearity and has potential applications in high-precision measuring microwave-signal nonlinearities.
      原文链接:
    • 万方数据
    • 维普

    Micron-resolved quantum precision measurement of magnetic field at the Tesla level

    安思瀚葛仕宇卢文韬陈国彬...
    106-111页
    查看更多>>摘要：We develop a quantum precision measurement method for magnetic field at the Tesla level by utilizing a fiber diamond magnetometer.Central to our system is a micron-sized fiber diamond probe positioned on the surface of a coplanar waveg-uide made of nonmagnetic materials.Calibrated with a nuclear magnetic resonance magnetometer,this probe demonstrates a broad magnetic field range from 10 mT to 1.5 T with a nonlinear error better than 0.0028％under a standard magnetic field generator and stability better than 0.0012％at a 1.5 T magnetic field.Finally,we demonstrate quantitative mapping of the vector magnetic field on the surface of a permanent magnet using the diamond magnetometer.
      原文链接:
    • 万方数据
    • 维普

    Apparatus for producing single strontium atoms in an optical tweezer array

    文凯陈辉锦颜煦任泽剑...
    112-118页
    查看更多>>摘要：We outline an experimental setup for efficiently preparing a tweezer array of 88 Sr atoms.Our setup uses permanent magnets to maintain a steady-state two-dimensional magneto-optical trap(MOT)which results in a loading rate of up to 108 s-1 at 5 mK for the three-dimensional blue MOT.This enables us to trap 2 × 106 88Sr atoms at 2 µK in a narrow-line red MOT with the 1 S0 → 3P1 intercombination transition at 689 nm.With the Sisyphus cooling and pairwise loss processes,single atoms are trapped and imaged in 813 nm optical tweezers,exhibiting a lifetime of 2.5 min.We further investigate the survival fraction of a single atom in the tweezers and characterize the optical tweezer array using a release and recapture technique.Our experimental setup serves as an excellent reference for those engaged in experiments involving optical tweezer arrays,cold atom systems,and similar research.
      原文链接:
    • 万方数据
    • 维普

    Influence of crystal dimension on performance of spherical crystal self-emission imager

    张成龙张翌航谷昊琛陈诺...
    119-127页
    查看更多>>摘要：The spherical crystal imaging system,noted for its high energy spectral resolution(monochromaticity)and spatial resolution,is extensively applied in high energy density physics and inertial confinement fusion research.This system supports studies on fast electron transport,hydrodynamic instabilities,and implosion dynamics.The x-ray source,produced through laser-plasma interaction,emits a limited number of photons within short time scales,resulting in predominantly photon-starved images.Through ray-tracing simulations,we investigated the impact of varying crystal dimensions on the performance of a spherical crystal self-emission imager.We observed that increasing the crystal dimension leads to higher imaging efficiency but at the expense of monochromaticity,causing broader spectral acceptance and reduced spatial resolution.Furthermore,we presented a theoretical model to estimate the spatial resolution of the imaging system within a specific energy spectrum range,detailing the expressions for the effective size of the crystal.The spatial resolution derived from the model closely matches the numerical simulations.
      原文链接:
    • 万方数据
    • 维普

    ScatterX:A software for fast processing of high-throughput small-angle scattering data

    谢飞解梅宋宝玉郭桥雨...
    128-141页
    查看更多>>摘要：Scattering experiments become increasingly popular in modem scientific research,including the areas of materials,biology,chemistry,physics,etc.Besides,various types of scattering facilities have been developed recently,such as lab-based x-ray scattering equipment,national synchrotron facilities and large neutron facilities.These above-mentioned trends bring up fast-increasing data amounts of scattering data,as well as different scattering types(x-ray,neutron,laser and even microwaves).To help researchers process and analyze scattering data more efficiently,we developed a general and model-free scattering data analysis software based on matrix operation,which has the unique advantage of high throughput scattering data processing,analysis and visualization.To maximize generality and efficiency,data processing is performed based on a three-dimensional matrix,where scattering curves are saved as matrices or vectors,rather than the traditional definition of paired values.It can not only realize image batch processing,background subtraction and correction,but also analyze data according to scattering theory and model,such as radius of gyration,fractal dimension and other physical quantities.In the aspect of visualization,the software allows the modify the color maps of two-dimensional scattering images and the gradual color variation of one-dimensional curves to suit efficient data communications.In all,this new software can work as a stand-alone platform for researchers to process,analyze and visualize scattering data from different research facilities without considering different file types or formats.All codes in this manuscript are open-sourced and can be easily implemented in matrix-based software,such as MATLAB,Python and Igor.
      原文链接:
    • 万方数据
    • 维普

    One-step synthesis of cubic gauche polymeric nitrogen with high yield just by heating

    吴良飞徐宇轩陈果丁俊峰...
    142-145页
    查看更多>>摘要：A high-efficient one-step synthesis of cubic gauche polymeric nitrogen was developed just by thermal treatment of KN3 powders.Raman and infrared spectra confirm the formation of cubic gauche polymeric nitrogen.Further thermo-gravimetric differential scanning calorimeter measurements show that the content of cubic gauche polymeric nitrogen is as high as 1.5 wt％with high thermal stability,which is the highest content value reported so far.
      原文链接:
    • 万方数据
    • 维普

    Disassembling one-dimensional chains in molybdenum oxides

    杜宪李义典赵文轩许润哲...
    146-155页
    查看更多>>摘要：The dimensionality of quantum materials strongly affects their physical properties.Although many emergent phenom-ena,such as charge-density wave and Luttinger liquid behavior,are well understood in one-dimensional(1D)systems,the generalization to explore them in higher dimensional systems is still a challenging task.In this study,we aim to bridge this gap by systematically investigating the crystal and electronic structures of molybdenum-oxide family compounds,where the contexture of 1D chains facilitates rich emergent properties.While the quasi-1D chains in these materials share general similarities,such as the motifs made up of MoO6 octahedrons,they exhibit vast complexity and remarkable tunability.We disassemble the 1D chains in molybdenum oxides with different dimensions and construct effective models to excellently fit their low-energy electronic structures obtained by ab initio calculations.Furthermore,we discuss the implications of such chains on other physical properties of the materials and the practical significance of the effective models.Our work establishes the molybdenum oxides as simple and tunable model systems for studying and manipulating the dimensionality in quantum systems.
      原文链接:
    • 万方数据
    • 维普

    Ultrafast reconfigurable direct charge trapping devices based on few-layer MoS2

    高辉刘轩冶宋鹏尉驰俊...
    156-166页
    查看更多>>摘要：Charge trapping devices incorporating 2D materials and high-κ dielectrics have emerged as promising candidates for compact,multifunctional memory devices compatible with silicon-based manufacturing processes.However,traditional charge trapping devices encounter bottlenecks including complex device structure and low operation speed.Here,we demonstrate an ultrafast reconfigurable direct charge trapping device utilizing only a 30 nm-thick Al2O3 trapping layer with a MoS2 channel,where charge traps reside within the Al2O3 bulk confirmed by transfer curves with different gate-voltage sweeping rates and photoluminescence(PL)spectra.The direct charging tapping device shows exceptional memory performance in both three-terminal and two-terminal operation modes characterized by ultrafast three-terminal operation speed(～300 ns),an extremely low OFF current of 10-14 A,a high ON/OFF current ratio of up to 107,and stable retention and endurance properties.Furthermore,the device with a simple symmetrical structure exhibits VD polarity-dependent reverse rectification behavior in the high resistance state(HRS),with a rectification ratio of 105.Additionally,utilizing the synergistic modulation of the conductance of the MoS2 channel by VD and VG,it achieves gate-tunable reverse rectifier and ternary logic capabilities.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Higher-order topological corner states and origin in monolayer LaBrO

    王庆郝宁
    167-172页
    查看更多>>摘要：Intrinsic higher-order topological insulators driven solely by orbital coupling are rare in electronic materials.Here,we propose that monolayer LaBrO is an intrinsic two-dimensional second-order topological insulator.The generalized second-order topological phase arises from the coupling between the 5d orbital of the La atom and the 2p orbital of the O atom.The underlying physics can be thoroughly described by a four-band generalized higher-order topological model.Notably,the edge states and corner states of monolayer LaBrO exhibit different characteristics in terms of morphology,number,and location distribution under different boundary and nanocluster configurations.Furthermore,the higher-order topological corner states of monolayer LaBrO are robust against variations in spin-orbit coupling and different values of Hubbard U.This provides a material platform for studying intrinsic 2D second-order topological insulators.
      原文链接:
    • 万方数据
    • 维普