封面文章

Efficient characterization of the coupler spectrum via sideband driving in superconducting qubits

Jianwen Xu(徐建文), Ruonan Guo(郭若男), Wen Zheng(郑文), Yu Zhang(张钰), Jie Zhao(赵杰), Zhiguo Huang(黄智国), Jingwei Wen(闻经纬), Runqing Zhang(张润清), Shaoxiong Li(李邵雄), Xinsheng Tan(谭新生), and Yang Yu(于扬)

Chin. Phys. B, 2025, 34(11):110302    

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Fig. 1. Enhanced connectivity of a 6-qubit (blue) superconducting quantum chip based on the transmon–coupler–transmon architecture. By applying microwaves with a certain detuning frequency to both the qubit and coupler, the blue sideband driving is activated. The resulting qubit response exhibits a high-contrast spectral variation. Taking the qubit frequency shift into account, the bare energy spectrum of the coupler can be inferred and is illustrated by the pink dashed line.

亮点文章

Precision calculation of ^4,6,8He isotope shifts

Xiao-Qiu Qi(戚晓秋), Xing-Han Dong(董星汉), Fang-Fei Wu(吴芳菲), Zong-Chao Yan(严宗朝), Li-Yan Tang(唐丽艳), Zhen-Xiang Zhong(钟振祥), and Ting-Yun Shi(史庭云)

Chin. Phys. B, 2025, 34 (11): 113101

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Table 3. Spin-independent contributions to the mass shifts, in kHz. When not explicitly stated, the numerical uncertainty is estimated to be less than 1 in the last significant digit.

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A dynamic crossover with possibly universal dynamic signatures in simple glass-forming liquids

Yiming Zheng(郑一鸣), Mingyu Zhu(朱明宇), Licun Fu(付立存), Pengfei Guan(管鹏飞), and Lijin Wang(王利近)

Chin. Phys. B, 2025, 34 (11): 116103

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Fig. 1. (a) Correlation between τ and α_2,max. Each vertical dashed line marks approximately the dynamic crossover τ_c. The horizontal line represents α_2,max=0.75. (b) Scaling collapse between α_2,max and τ. Symbols in (a) and (b) represent the same meanings.

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Possible orthorhombic phase of Ta₂O₅ under high pressures

Yan Gong(龚艳), Hui-Min Tang(唐慧敏), Yong Yang(杨勇), and Yoshiyuki Kawazoe

Chin. Phys. B, 2025, Vol. 34(11): 116104

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Fig. 1. Ta₂O₅在高压下的结构相变示意图：在外压下，单斜晶系的B相转变为正交晶系的Y相。右版面给出Y相晶胞示意图，以及与B相的焓值随压力的变化关系。图上标注出相变的临界压力点，对比了包含与未包含零点能(Zero-point Energy, ZPE)修正的情形。

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Unconventional superconductivity in Cr-based nitride La₃Cr_10-xN₁₁

M Y Zou(邹牧远), J C Jiao(焦嘉琛), K W Chen(陈锴文), C Y Jiang(姜程予), C S Chen(陈长胜), X Li(李鑫), Q Wu(吴琼), N Y Zhang(张宁远), O O Bernal, P C Ho, A Koda, D E MacLaughlin, and L Shu(殳蕾)

Chin. Phys. B, 2025, Vol. 34(11): 117104        

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Fig. 3. (a) Temperature dependence of C/T at zero field. Line: fit of C/T = γ + bT² to the normal-state data. (b) Temperature and field dependence of electronic specific heat Ce/γnT. Curves: fits of the full-gap model  and a residual constant. Vertical dashed lines: superconducting transition temperatures. (c) Temperature dependence of the upper critical field H_c2. Dashed line: Pauli paramagnetic limit. (d) Field dependence of relative residual specific heat coefficient γ0(H)/γ0(0).

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High-frequency complex permeability calculation for metallic soft magnetic particles with easy magnetization plane in non-magnetic medium

Liangrui Tan(谭梁睿), Donglin He(何东霖), Zhibiao Xu(徐志彪), Guowu Wang(王国武), Shengyu Yang(杨晟宇), Shaoyong Leng(冷绍勇), Ruilong Li(李睿龙), and Tao Wang(王涛)

Chin. Phys. B, 2025, Vol. 34(11): 117501              

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Fig. 1. Flow chart of complex permeability calculation for easy-plane metallic SMCs.

Fig. 2. (a) Experimental data vs. calculated values for the real part of initial permeability of SMC prepared with SD powder at different volume fractions. (b) Complex permeability experimental and calculated values for 50% composite samples of BD powders. (c) Complex permeability experimental and calculated values for 50% composite samples of SD powders.

特色栏目

Data Papers

Instrumentation and Measurement

Computational Programs for Physics

近期专题精选

Celebrating 30 Years of Chinese Physics B

Stephen J. Pennycook: A research life in atomic-resolution STEM and EELS

Recent progress on kagome metals and superconductors

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Quantum computing and quantum sensing

Structures and properties of materials under high pressure

Post-Moore era: Materials and device physics

States and new effects in nonequilibrium

Valleytronics

Smart design of materials and design of smart materials

Superconductivity in vanadium-based kagome materials

Non-Hermitian physics

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