首页期刊导航|中国物理B（英文版）
期刊信息/Journal information
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。
正式出版
收录年代

    Sharing quantum nonlocality in the noisy scenario

    杨舒媛侯晋川贺衎
    217-230页
    查看更多>>摘要：It was showed in[Phys.Rev.Lett.125 090401(2020)]that there exist unbounded number of independent Bobs who can share quantum nonlocality with a single Alice by performing sequentially measurements on the Bob's half of the maximally entangled pure two-qubit state.However,from practical perspectives,errors in entanglement generation and noises in quantum measurements will result in the decay of nonlocality in the scenario.In this paper,we analyze the persistency and termination of sharing nonlocality in the noisy scenario.We first obtain the two sufficient conditions under which there exist n independent Bobs who can share nonlocality with a single Alice under noisy measurements and the noisy initial two qubit entangled state.Analyzing the two conditions,we find that the influences on persistency under different kinds of noises can cancel each other out.Furthermore,we describe the change patterns of the maximal nonlocality-sharing number under the influence of different noises.Finally,we extend our investigation to the case of arbitrary finite-dimensional systems.
      原文链接:
    • 万方数据
    • 维普

    Observation of flat-band localized state in a one-dimensional diamond momentum lattice of ultracold atoms

    曾超石悦然毛一屹武菲菲...
    231-237页
    查看更多>>摘要：We investigated the one-dimensional diamond ladder in the momentum lattice platform.By inducing multiple two-and four-photon Bragg scatterings among specific momentum states,we achieved a flat band system based on the diamond model,precisely controlling the coupling strength and phase between individual lattice sites.Utilizing two lattice sites cou-plings,we generated a compact localized state associated with the flat band,which remained localized throughout the entire time evolution.We successfully realized the continuous shift of flat bands by adjusting the corresponding nearest neighbor hopping strength,enabling us to observe the complete localization process.This opens avenues for further exploration of more complex properties within flat-band systems,including investigating the robustness of flat-band localized states in disordered flat-band systems and exploring many-body localization in interacting flat-band systems.
      原文链接:
    • 万方数据
    • 维普

    Higher-order topological Anderson insulator on the Sierpiński lattice

    陈焕刘峥嵘陈锐周斌...
    238-243页
    查看更多>>摘要：Disorder effects on topological materials in integer dimensions have been extensively explored in recent years.How-ever,its influence on topological systems in fractional dimensions remains unclear.Here,we investigate the disorder effects on a fractal system constructed on the Sierpiński lattice in fractional dimensions.The system supports the second-order topological insulator phase characterized by a quantized quadrupole moment and the normal insulator phase.We find that the second-order topological insulator phase on the Sierpiński lattice is robust against weak disorder but suppressed by strong disorder.Most interestingly,we find that disorder can transform the normal insulator phase to the second-order topological insulator phase with an emergent quantized quadrupole moment.Finally,the disorder-induced phase is further confirmed by calculating the energy spectrum and the corresponding probability distributions.
      原文链接:
    • 万方数据
    • 维普

    Effects of carrier density and interactions on pairing symmetry in a t2g model

    李云霄西文翰董召阳姚子健...
    244-252页
    查看更多>>摘要：By utilizing the fluctuation exchange approximation method,we perform a study on the superconducting pairing symmetry in a t2g three-orbital model on the square lattice.Although the tight-binding parameters of the model are based on Sr2RuO4,we have systematically studied the evolution of superconducting pairing symmetry with the carrier density and interactions,making our findings relevant to a broader range of material systems.Under a moderate Hund's coupling,we find that spin fluctuations dominate the superconducting pairing,leading to a prevalent spin-singlet pairing with a dx2-y2-wave symmetry for the carrier density within the range of n=1.5-4 per site.By reducing the Hund's coupling,the charge fluctuations are enhanced and play a crucial role in determining the pairing symmetry,leading to a transition of the pairing symmetry from the spin-singlet dx2-y2-wave to the spin-triplet p-wave.Furthermore,we find that the superconducting pairings are orbital dependent.As the carrier density changes from n=4 to n=1.5,the active orbitals for superconducting pairing shift from the quasi-two-dimensional orbital dxy to the quasi-one-dimensional orbitals dxz and dyz.
      原文链接:
    • 万方数据

    Optical study of magnetic topological insulator MnBi4Te7

    廖知裕沈冰邱祥冈许兵...
    253-258页
    查看更多>>摘要：We present an infrared spectroscopy study of the magnetic topological insulator MnBi4Te7 with antiferromagnetic(AFM)order below the Néel temperature TN=13 K.Our investigation reveals that the low-frequency optical conductivity consists of two Drude peaks,indicating a response of free carriers involving multiple bands.Interestingly,the narrow Drude peak grows strongly as the temperature decreases,while the broad Drude peak remains relatively unchanged.The onset of interband transitions starts around 2000 cm-1,followed by two prominent absorption peaks around 10000 cm-1 and 20000 cm-1.Upon cooling,there is a notable transfer of spectral weight from the interband transitions to the Drude response.Below TN,the AFM transition gives rise to small anomalies of the charge response due to a band reconstruction.These findings provide valuable insights into the interplay between magnetism and the electronic properties in MnBi4Te7.
      原文链接:
    • 万方数据

    Maskless fabrication of quasi-omnidirectional V-groove solar cells using an alkaline solution-based method

    陈兴谦王燕陈伟刘尧平...
    259-266页
    查看更多>>摘要：Silicon passivated emitter and rear contact(PERC)solar cells with V-groove texture were fabricated using maskless alkaline solution etching with in-house developed additive.Compared with the traditional pyramid texture,the V-groove texture possesses superior effective minority carrier lifetime,enhanced p-n junction quality and better applied filling factor(FF).In addition,a V-groove texture can greatly reduce the shading area and edge damage of front Ag electrodes when the V-groove direction is parallel to the gridline electrodes.Due to these factors,the V-groove solar cells have a higher efficiency(21.78％)than pyramid solar cells(21.62％).Interestingly,external quantum efficiency(EQE)and reflectance of the V-groove solar cells exhibit a slight decrease when the incident light angle(θ)is increased from 0° to 75°,which confirms the excellent quasi omnidirectionality of the V-groove solar cells.The proposed V-groove solar cell design shows a 2.84％relative enhancement of energy output over traditional pyramid solar cells.
      原文链接:
    • 万方数据
    • 维普

    Efficient method to calculate the eigenvalues of the Zakharov-Shabat system

    崔世坤王振
    267-274页
    查看更多>>摘要：A numerical method is proposed to calculate the eigenvalues of the Zakharov-Shabat system based on Chebyshev polynomials.A mapping in the form of tanh(ax)is constructed according to the asymptotic of the potential function for the Zakharov-Shabat eigenvalue problem.The mapping can distribute Chebyshev nodes very well considering the gradient for the potential function.Using Chebyshev polynomials,tanh(ax)mapping,and Chebyshev nodes,the Zakharov-Shabat eigenvalue problem is transformed into a matrix eigenvalue problem.This method has good convergence for the Satsuma-Yajima potential and the convergence rate is faster than the Fourier collocation method.This method is not only suitable for simple potential functions but also converges quickly for a complex Y-shape potential.It can also be further extended to other linear eigenvalue problems.
      原文链接:
    • 万方数据

    A deep learning method based on prior knowledge with dual training for solving FPK equation

    彭登辉王神龙黄元辰
    275-289页
    查看更多>>摘要：The evolution of the probability density function of a stochastic dynamical system over time can be described by a Fokker-Planck-Kolmogorov(FPK)equation,the solution of which determines the distribution of macroscopic variables in the stochastic dynamic system.Traditional methods for solving these equations often struggle with computational efficiency and scalability,particularly in high-dimensional contexts.To address these challenges,this paper proposes a novel deep learning method based on prior knowledge with dual training to solve the stationary FPK equations.Initially,the neural network is pre-trained through the prior knowledge obtained by Monte Carlo simulation(MCS).Subsequently,the second training phase incorporates the FPK differential operator into the loss function,while a supervisory term consisting of local maximum points is specifically included to mitigate the generation of zero solutions.This dual-training strategy not only expedites convergence but also enhances computational efficiency,making the method well-suited for high-dimensional systems.Numerical examples,including two different two-dimensional(2D),six-dimensional(6D),and eight-dimensional(8D)systems,are conducted to assess the efficacy of the proposed method.The results demonstrate robust performance in terms of both computational speed and accuracy for solving FPK equations in the first three systems.While the method is also applicable to high-dimensional systems,such as 8D,it should be noted that computational efficiency may be marginally compromised due to data volume constraints.
      原文链接:
    • 万方数据
    • 维普

    Research and application of composite stochastic resonance in enhancement detection

    高蕊焦尚彬薛琼婕
    290-300页
    查看更多>>摘要：Aiming at the problem that the intermediate potential part of the traditional bistable stochastic resonance model cannot be adjusted independently,a new composite stochastic resonance(NCSR)model is proposed by combining the Woods-Saxon(WS)model and the improved piecewise bistable model.The model retains the characteristics of the independent parameters of WS model and the improved piecewise model has no output saturation,all the parameters in the new model have no coupling characteristics.Under α stable noise environment,the new model is used to detect periodic signal and aperiodic signal,the detection results indicate that the new model has higher noise utilization and better detection effect.Finally,the new model is applied to image denoising,the results showed that under the same conditions,the output peak signal-to-noise ratio(PSNR)and the correlation number of NCSR method is higher than that of other commonly used linear denoising methods and improved piecewise SR methods,the effectiveness of the new model is verified.
      原文链接:
    • 万方数据
    • 维普

    Threshold-independent method for single-shot readout of spin qubits in semiconductor quantum dots

    胡睿梓祝圣凯张鑫周圆...
    301-307页
    查看更多>>摘要：The single-shot readout data process is essential for the realization of high-fidelity qubits and fault-tolerant quan-tum algorithms in semiconductor quantum dots.However,the fidelity and visibility of the readout process are sensitive to the choice of the thresholds and limited by the experimental hardware.By demonstrating the linear dependence be-tween the measured spin state probabilities and readout visibilities along with dark counts,we describe an alternative threshold-independent method for the single-shot readout of spin qubits in semiconductor quantum dots.We can obtain the extrapolated spin state probabilities of the prepared probabilities of the excited spin state through the threshold-independent method.We then analyze the corresponding errors of the method,finding that errors of the extrapolated probabilities cannot be neglected with no constraints on the readout time and threshold voltage.Therefore,by limiting the readout time and threshold voltage,we ensure the accuracy of the extrapolated probability.We then prove that the efficiency and robustness of this method are 60 times larger than those of the most commonly used method.Moreover,we discuss the influence of the electron temperature on the effective area with a fixed external magnetic field and provide a preliminary demonstration for a single-shot readout of up to 0.7 K/1.5 T in the future.
      原文链接:
    • 万方数据
    • 维普