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Study of charmonium(-like)mesons under a diabatic approach

Chinese Physics C 2025年第1期49卷 70-79页

作者： Zi-Zhao Zhang Rong Li Bo-Chao Liu MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of PhysicsXi'an Jiaotong UniversityXi'an 710049China

In this work,we study the charmonium(-like)spectrum below 4.1 GeV using the diabatic approach,which offers a unified description of conventional and unconventional heavy meson *** to previous studies,we consider a more realistic cc potential by including the spin-dependent interactions,which allows us to obtain more states and insights into the charmonium *** on our calculation,we obtain the masses of the charmonium spectrum,which align well with experimental *** also present the probabilities of finding various components,i.e.,cc or meson-meson pairs,in these *** results support the arguments that X_(c1)(3872),Ψ(4040),and X_(c2)(3930)have significant molecular *** addition,our calculations show that X_(c0)(3860)and Ψ(3770)can be considered as candidates for the charmonium states X_(c0)(2P)and Ψ(1D),respectively.

关键词： quark model charmonium spectrum molecular state

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Periodic modulation of adiabatic dynamics in non-reciprocal Landau-Zener systems

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Chinese Physics B 2025年第3期34卷 259-264页

作者： Rong Chang Sheng-Chang Li MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic Devicesand School of PhysicsXi’an Jiaotong UniversityXi’an 710049China

The control of adiabatic dynamics is essential for quantum *** investigate the effects of both periodic modulating field and linear sweeping field on adiabatic dynamics based on a non-reciprocal Landau-Zener model with periodic *** obtain adiabatic phase diagrams in the(ω,δ)parameter space,where the adiabatic region is bounded by the modulating frequencyωgreater than a critical valueω_(c) and the non-reciprocal parameterδless than *** results show that the adiabaticity of the system is not sensitive to the modulating *** find that the critical modulating frequency can be expressed as a power function of the modulating period number or the sweeping *** findings suggest that one can change the adiabatic region or improve the adiabaticity by adjusting the parameters of both the modulating and the sweeping fields,which provides an effective means to flexibly control the adiabatic dynamics of non-reciprocal systems.

关键词： adiabaticity non-reciprocity Landau-Zener tunneling periodic modulation

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Analysis of the K_(-)p→γΛ reaction

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Chinese Physics C 2025年第4期49卷 142-151页

作者： Yi Pan Rong Li Bo-Chao Liu MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of PhysicsXi'an Jiaotong UniversityXi'an 710049China Institute of Theoretical Physics Xi'an Jiaotong UniversityXi'an 710049China

In this work,we study the K_(-)p→γΛreaction in an effective Lagrangian approach and isobar *** to previous studies using a Regge-plus-resonance model,we consider the contributions of the t-channel(K and K^(*))and u-channel(proton)exchanges explicitly as the background *** restore the gauge invariance of the amplitude violated by introducing the phenomenological form factors,we employ two different methods from the ***,we discuss the roles of possible resonance contributions in this reaction and present predictions ofΛpolarization based on various *** find that the contribution of the background terms plays an important role in the present ***,theΛ(1520),∑(1660),and∑(1670)resonances may also contribute to this *** to the uncertainties of the present data and relatively small contributions of the hyperon resonances,we cannot identify the roles of various hyperon resonances in the present ***,we show that the measurement of the spin polarization of the final A will be helpful to verify various models.

关键词： resonance Lambda polarization gauge invariance

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Presolvation Dynamics Preceding the Hydrated Proton Transfer in the Electrical Double Layer

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Journal of Physical Chemistry Letters 2025年 4572-4578页

作者： Xue, Yufei Wang, Lin-Wang Gao, Guoping MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter Shaanxi Province Key Laboratory of Advanced Functional Materials and Mesoscopic Physics School of Physics Xi’an Jiaotong University Shaanxi Xi’an710049 China State key laboratory of superlattices and microstructures Institute of Semiconductors Chinese Academy of Sciences Beijing100083 China

Hydrated proton transfer (PT) mechanisms in a solid-liquid electric double layer (EDL) remain challenging, as the solvation structure is influenced by the operating potential. Under constant potential framework, we combined the fixed-potential method with ab initio molecular dynamics (AIMD) to simulate the PT in the EDL. Near the interface of EDL, negative potential (vs zero-charge potential) promotes the effective diffusion of the excess proton via reducing the proportion of trapping and revisiting processes of PT, but stiffens the hydrogen bond network manifesting as the restriction of water orientation and the elongation of the O···O pairs. At high negative potentials, hydrated hydrogen ions tend to form the Eigen cation (H2O)3H3O+ during presolvation processes, but this cation exhibits a higher energy barrier for PT than the pentamer (H2O)4H3O+ with a 4-fold coordinated shell. Further simulations reveal that the stiffening effect and the Eigen cation formation suppress proton conductivity near the electrode surface. © 2025 American Chemical Society.

关键词： Solvation

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Directional emission of a broadband squeezed microwave field

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Physical Review A 2025年第2期111卷 023701-023701页

作者： Rong-teng Cao Ji-kun Xie Ya-long Ren Shao-yan Gao MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic Devices School of Physics Xi'an Jiaotong University Xi'an 710049 China

Broadband squeezed light is a valuable resource in the quantum information science community. Here, we propose an appealing method for the directional generation of broadband microwave squeezing based on hybrid magnonics, where multiple chiral cavity-magnonic subsystems are connected together through a bidirectional waveguide in a cascading way. The chirality arises from the selective coupling between the Kittel mode in the ferrimagnetic yttrium iron garnet sphere and one of the two degenerate counter-rotating microwave modes in a ring-shaped cavity. By introducing Floquet engineering to simultaneously induce red and blue sidebands in the photon-magnon coupling, the chiral squeezing-type interaction can be engineered in each cavity-magnonic subsystem. Considering all the photon-magnon couplings in the cascaded system with the same chirality, we show that a broadband squeezed microwave field can be emitted on demand to either of the two output ports along the waveguide. Compared with a single chiral cavity-magnonic system, both the squeezing amount and the bandwidth can be significantly enhanced through the cumulative effect of the cascaded system.

关键词： Photons

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modulation of the octahedral structure and potential superconductivity of La_(3)Ni_(2)O_(7)through strain engineering

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Science China(Physics,Mechanics & Astronomy) 2025年第3期68卷 145-152页

作者： Zihao Huo Zhihui Luo Peng Zhang Aiqin Yang Zhengtao Liu Xiangru Tao Zihan Zhang Shumin Guo Qiwen Jiang Wenxuan Chen Dao-Xin Yao Defang Duan Tian Cui Key Laboratory of Material Simulation Methods&Software of Ministry of Education State Key Laboratory of Superhard MaterialsCollege of PhysicsJilin UniversityChangchun130012China Center for Neutron Science and Technology Guangdong Provincial Key Laboratory of Magnetoelectric Physics and DevicesState Key Laboratory of Optoelectronic Materials and TechnologiesSchool of PhysicsSun Yat-sen UniversityGuangzhou510275China MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter Shaanxi Province Key Laboratory of Advanced Functional Materials and Mesoscopic PhysicsSchool of PhysicsXi’an Jiaotong UniversityXi’an710049China Institute of High Pressure Physics School of Physical Science and TechnologyNingbo UniversityNingbo315211China

The recent transport measurements of La_(3)Ni_(2)O_(7)uncovered a“right-triangle”shape of the superconducting dome in the pressure-temperature(P-T)phase *** by this,we perform theoretical first-principles studies of La_(3)Ni_(2)O_(7)with the pressure ranging from 0 to 100 ***,we reveal a pressure dependence of the Ni-d_(z^(2))electron density at the Fermi energy(n_(z)^(E_(F)))that highly coincides with such *** this basis,we further explore the electronic structure under uniaxial *** tracking the stress response of n_(z)^(E_(F)),we propose that superconductivity can be achieved by applying only ~2GPa of compression along the c *** idea is further exemplified from the perspectives of lattice distortion,band structure,Fermi surface and superconducting phase *** also discuss the possible charge modulation under the stress and provide an insight into the relation between nz E Fand the superconducting T_(c)in La_(3)Ni_(2)O_(7)*** study provides new routes to the search of high-T_(c)superconductors in future experiments.

关键词： nickelate superconductors density functional theory strong correlated systems strain engineering

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High-speed image reconstruction for nonlinear structured illumination microscopy

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Photonics Research 2025年第3期13卷 743-760页

作者： JINGXIANG ZHANG TIANYU ZHAO XIANGDA FU MANMING SHU JIAJING YAN MENGRUI WANG YANSHENG LIANG SHAOWEI WANG MING LEI MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of PhysicsXi'an Jiaotong University State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University

By exploiting the nonlinear responses of fluorescent probes, the spatial resolution of structured illumination microscopy (SIM) can be further increased. However, the traditional reconstruction method of nonlinear structured illumination microscopy (NL-SIM) is very slow due to its complex process, which poses a significant challenge to display super resolution results in real-time. Here, we describe an efficient and robust SIM algorithm that enables rapid and accurate full-process SIM reconstruction. First, we present a fast illumination parameters estimation algorithm based on discrete Fourier transforms that result in a more simplified workflow than that of classical methods. Second, an accelerated NL-SIM reconstruction algorithm is developed by extending a highspeed reconstruction framework, joint space and frequency reconstruction (JSFR), to the NL-SIM. In particular,we provide the open-source MATLAB toolbox of our JSFR-NL-SIM algorithm. The entire image reconstruction process is completed in the milliseconds range, representing a significant time saving for the user.

关键词： Fourier transforms High speed imaging Spatial resolution Structured illumination microscopy Super resolution microscopy Superresolution

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The d-p orbital hybridization engineered RhPb bimetallene for efficient ethanol electrooxidation

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Science China Chemistry 2025年第5期 1897-1905页

作者： Bo-Qiang Miao Zi-Han Yuan Qing-Ling Hong Xuan Ai Fu-Min Li Pei Chen Pu-Jun Jin Yu Chen Key Laboratory of Macromolecular Science of Shaanxi Province Shaanxi Key Laboratory for Advanced Energy DevicesSchool of Materials Science and EngineeringShaanxi Normal University MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of PhysicsXi'an Jiaotong University

The construction of bimetallic sites with strong interaction can effectively regulate the electronic structure and modulate the adsorption behavior of adsorbate species on bimetallic catalysts, thereby overcoming catalytic bottlenecks. Herein, an RhPb bimetallene(RhPb b-ML) with the strong d-p orbital hybridization is proposed for efficiently catalyzing ethanol oxidation reaction(EOR). Notably, the specific EOR activity of RhPb b-ML is 32 and 6.8 times higher than those of Rh metallene and commercial Pt/C, respectively. Theoretical calculation analysis reveals that the introduction of Pb atoms into the Rh lattice leads to an upward shift of the d-band center of Rh on RhPb(111). The shift in the d-band center is primarily attributed to the different degrees of hybridization between the d sub-orbitals of Rh and the p-orbitals of Pb, which enhance the adsorption of key species and improve EOR activity and selectivity. In-situ infrared tests and high-performance liquid chromatography tests together confirm that RhPb b-ML not only exhibits enhanced ability for the breakage of C–C bonds but also effectively suppresses the generation of absorbed CO. Furthermore, the strategy of enhancing catalyst performance through the strong d-p orbital hybridization has been demonstrated to be scalable to other bimetallic catalysts, providing valuable insights for the design of advanced catalysts.

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Exploring the Magnetism of C_(5)/C_(2)B_(3) Heteroleptic Organolanthanide Sandwiches

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Chinese Journal of Chemistry 2025年第2期43卷 131-138页

作者： Ye-Ye Liu Qian-Cheng Luo Peng-Bo Jin Yan-Zhen Zheng Frontier Institute of Science and Technology(FIST) State Key Laboratory of Electrical Insulation and Power EquipmentMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MatterXi’an Key Laboratory of Electronic Devices and Material Chemistry and School of ChemistryXi’an Jiaotong UniversityXi’anShaanxi710054 China Department of Hepatobiliary Surgery and Institute of Advanced Surgical Technology and Engineering The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’anShaanxi710061 China

Two families of cyclopentadienyl(Cp)/carboranyl heteroleptic sandwiched organolanthanide complexes,namely[Ln{η^(5):σ-Me_(2)C(C_(5)H_(4))(C_(2)B_(10)H_(10))}_(2)][Li(DME)_(3)](1Ln,Ln=Tb,Dy,Ho,Er)and[2-THF-2'-(μ^(2)-Cl)Li(THF)_"(3)-2,2'-Ln(nido-1,7-C_(2)B_(9)H_(11))Cp*](2Dy),were *** of 1Ln has been proposed based on the mixing-ligands idea by linking Cp and ***,the carborane cage of[Me_(2)C(C_(5)H_(4))(C_(2)B_(10)H_(10))]_(2)−deprotons and forms a mono-C−anion rather than deboron to form dicarborllide ***,the family of 1Ln features a dysprosocenium skeleton with extra two coordination of C−anions of *** coordination geometry is more like a tetrahedron if abstracting the centroids of two coordinated Cp *** this cubic-type geometry,no significant magnetic axiality is presented;only 1Dy and 1Tb show field-induced slow magnetic relaxation behavior below 10 *** by 1Ln,the free pentamethylcyclopentadienyl(Cp^(*−))and nido-dicarborllide ligands are used to sandwich central Dy3+ion,achieving heteroleptic complex *** bending angle by linking the centroid of Cp^(*−),Dy^(3+)and C_(2)B_(3)^(2−)in 2Dy is increased to 132.8(1)°.As such,the effective energy barrier for magnetic reversal(Ueff)and magnetic blocking temperature TB(ZFC)are both increased(Ueff=616(10)K;TB=6 K).The effort of further enhancing Ueff and TB in such heteroleptic organolanthanide sandwiches should rely on keeping increasing the ligand axiality.

关键词： Single-molecule magnets Heteroleptic sandwiched complexes nido-Dicarborllide Lanthanides Cyclopentadienyl

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Intra-band entanglement-assisted cavity electro-optic quantum transducer

arXiv

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arXiv 2025年

作者： Hou, Yu-Bo You, Rui-Zhe Zhang, Di-Jia Li, Pengbo Zhong, Changchun MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter China Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic Devices China School of Physics Xi’an Jiaotong University Xi’an710049 China

Quantum transduction is a key technology for connecting different quantum technologies across varied frequencies. However, it remains a major challenge to overcome the high threshold for achieving positive capacity of traditional quantum transduction channels. Recently, an entanglement-assisted transducer was proposed based on a cavity-optic system [Opt. Quantum 2, 475 (2024)], where a modified bosonic loss channel was obtained, and the transduction efficiency can be enhanced by properly tuning the squeezing parameters. In this paper, we further identify three types of quantum channels enabled by this design, offering additional options for implementing the proposed transduction schemes. Compared to the transducers without entanglement assistance, the scheme also shows a great enhancement in the conversion bandwidth for achieving high quantum capacity, further increasing its value in practical applications. © 2025, CC BY.

关键词： Quantum entanglement

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