Science China Physics, Mechanics & Astronomy最新文献_第5页

Ubiquitous van der Waals altermagnetism with sliding/moire ferroelectricity 无所不在的范德华磁与滑动/云纹铁电

IF 7.5 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2025-07-22 DOI: 10.1007/s11433-025-2698-5

Yuxuan Sheng, Jia Zhang, Junwei Liu, Menghao Wu

引用次数: 0

Quantum-inspired optimization boosts efficient and accurate observation selection in data assimilation 量子启发的优化提高了数据同化中有效和准确的观测选择

IF 7.5 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2025-07-21 DOI: 10.1007/s11433-025-2730-6

Wei You

引用次数: 0

Magnetic and optical control in thermal atomic spin ensembles: Principles and applications 热原子自旋综中的磁和光控制：原理和应用

IF 7.5 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2025-07-21 DOI: 10.1007/s11433-025-2718-0

Shimiao Fan, Hongyu Pei, Wei Quan, Yifan Jia, Jiaxin Liu, Wenfeng Fan

{"title":"Magnetic and optical control in thermal atomic spin ensembles: Principles and applications","authors":"Shimiao Fan, Hongyu Pei, Wei Quan, Yifan Jia, Jiaxin Liu, Wenfeng Fan","doi":"10.1007/s11433-025-2718-0","DOIUrl":"10.1007/s11433-025-2718-0","url":null,"abstract":"<div>This paper provides a comprehensive review of the principles of magnetic and optical control in thermal atomic spin ensembles, as well as recent advances and applications in quantum precision measurement. As a practical macroscopic quantum system, thermal atomic spin ensembles have emerged as a key platform for next-generation quantum sensors due to their exceptional sensitivity, accuracy, and scalability. The review emphasizes how magneto-optical modulation techniques can be employed to extract real-time information about spin dynamics and system states, thereby generating high-quality observables that serve as the foundation for advanced control strategies such as feedback regulation, quantum state estimation, and pulsed manipulation. These techniques are shown to play a crucial role in enhancing measurement sensitivity, dynamic response and long-term stability. In addition, the incorporation of modern control theories, including closed-loop feedback and Kalman filter, has facilitated real-time optimization of atomic spin dynamics, unlocking new levels of sensitivity across a range of applications such as atomic magnetometers, co-magnetometers, inertial sensors, and microwave masers. This paper systematically discusses the synergistic interplay of modulation, measurement, and control in thermal spin ensembles, exploring its potential across a wide range of scientific and engineering applications. These technological advances provide a solid foundation for ultra-sensitive magnetic field detection and show promising prospects in frontier fields such as dark matter detection and gravitational wave observation. Looking ahead, such innovations are expected to further drive the miniaturization and integration of quantum sensors, significantly expanding their utility across disciplines.</div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"68 10","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145167579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pioneering self-testing into the complex Hilbert space 在复杂的希尔伯特空间开创性地进行自我测试

IF 7.5 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2025-07-21 DOI: 10.1007/s11433-025-2715-0

Shuming Cheng

引用次数: 0

Experimental self-testing of complex projective measurements via elegant Bell inequality 通过优雅贝尔不等式的复杂投影测量的实验自检验

IF 7.5 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2025-07-21 DOI: 10.1007/s11433-025-2697-0

Xinhui Li, Yingning Miao, Wei Zhou, Xuhao Yu, Wenhui Song, Ying Wei, Fei Gao, Xiaoqin Gao, Yan-Xiao Gong, Shi-Ning Zhu

引用次数: 0

Breaking the polarization bottleneck: An ultra-compact adiabatic structure-connected micro-ring that unifies wavelength and polarization multiplexing 突破极化瓶颈：一种超紧凑的绝热结构连接微环，统一了波长和极化复用

IF 7.5 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2025-07-18 DOI: 10.1007/s11433-025-2735-x

Jianjun Yu

引用次数: 0

Cascade quantum transitions in antiferromagnetic quantum anomalous Hall effect 反铁磁量子反常霍尔效应中的级联量子跃迁

IF 7.5 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2025-07-18 DOI: 10.1007/s11433-025-2721-4

Huaiqiang Wang, Haijun Zhang

引用次数: 0

Complete switching of transverse and longitudinal spin-photon coupling in silicon 硅中横向和纵向自旋光子耦合的完全开关

IF 7.5 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2025-07-18 DOI: 10.1007/s11433-025-2695-7

Fang-Ge Li, Ranran Cai, Ze-Cheng Wei, Bao-Chuan Wang, Hai-Ou Li, Gang Cao, Guo-Ping Guo

{"title":"Complete switching of transverse and longitudinal spin-photon coupling in silicon","authors":"Fang-Ge Li, Ranran Cai, Ze-Cheng Wei, Bao-Chuan Wang, Hai-Ou Li, Gang Cao, Guo-Ping Guo","doi":"10.1007/s11433-025-2695-7","DOIUrl":"10.1007/s11433-025-2695-7","url":null,"abstract":"<div>Silicon spin qubits have emerged as one of the most promising platforms for quantum computing. To achieve scalability, the spin-photon coupling in the frame of circuit-QED offers a reliable architecture that garners significant attention. Depending on the coupling mechanisms, spin-photon coupling is categorized into transverse (gx) and longitudinal (gz) components, each offering distinct advantages for operation and readout, respectively. In practical scenarios, gx and gz often coexist and interfere with each other. To enable on-demand separation of these two couplings, we propose an alternative scheme based on spin-orbit torque (SOT). By employing SOT to switch the magnetization of micromagnets, the symmetry of the stray fields surrounding the spin qubit is modified, naturally isolating gx and gz. Furthermore, within this SOT scheme, we demonstrate that the dynamic longitudinal coupling (g\u0000 dyz\u0000 \u0000 ) can also be fully decoupled from gx through applying appropriate parametric driving. Our results thus pave the way toward scalable silicon spin qubit architectures.</div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"68 9","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On simplified scenario of annular purging jet issuing from moving wafer stage in lithography machine 光刻机移动晶圆台环形吹扫射流的简化方案

IF 7.5 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2025-07-16 DOI: 10.1007/s11433-024-2571-4

Jian Cao, Sen Li, Xin Wen, Hong Liu, Ben-Long Wang, Ying-Zheng Liu

{"title":"On simplified scenario of annular purging jet issuing from moving wafer stage in lithography machine","authors":"Jian Cao, Sen Li, Xin Wen, Hong Liu, Ben-Long Wang, Ying-Zheng Liu","doi":"10.1007/s11433-024-2571-4","DOIUrl":"10.1007/s11433-024-2571-4","url":null,"abstract":"<div>A simplified scenario of the annular purging jet issuing from the moving wafer stage in the lithography machine is established to study the interactions between the jet and the ambient fluid. Numerical simulations in the reference frame associated with the moving stage are carried out to delineate the dynamics of the purging jet under different ratios of the jet velocity to the moving velocity. As the velocity ratio increases, different flow patterns depict that the flow evolves from laminar to turbulent and from crossflow-dominated to purging-dominated. The behaviors of the leading-edge shear layer, i.e., breakthrough by the crossflow or impingement to the upper wall, are found to determine the flow pattern and influence the entrainment process. The shear layer dynamics are investigated by analogy to a counter-current mixing layer. The mixing layer ratio of the annular purging jet is obtained, suggesting the transition from absolute to convective instability. The infiltration flux into the inner region of the annular purging jet is evaluated, indicating the dominance of the leakage near the upper wall. The performance of the annular purging jet is assessed in terms of the effectiveness, the fraction of the infiltration flux prevented compared with the unshielded condition and is related to the flow unsteadiness. As the velocity ratio increases, the shielding effect is enhanced and the effectiveness of the annular air curtain increases monotonically with decreasing growth rate.</div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"68 9","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Response of a millimeter-sized opaque drop to tightly focused nanosecond laser pulse 毫米大小的不透明液滴对紧密聚焦的纳秒激光脉冲的响应

IF 7.5 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2025-07-16 DOI: 10.1007/s11433-024-2579-6

Cheng Xu, Zhihan Zhang, Tianqi Zhai, Xinyan Zhao, Lihao Gao, Yanchu Liu, Weiwei Deng

{"title":"Response of a millimeter-sized opaque drop to tightly focused nanosecond laser pulse","authors":"Cheng Xu, Zhihan Zhang, Tianqi Zhai, Xinyan Zhao, Lihao Gao, Yanchu Liu, Weiwei Deng","doi":"10.1007/s11433-024-2579-6","DOIUrl":"10.1007/s11433-024-2579-6","url":null,"abstract":"<div>We experimentally study the blast of a millimeter-sized drop of water dyed red subjected to a tightly focused nanosecond 532 nm laser pulse. The red water drop is opaque to the green laser wavelength, but is transparent to the red illumination, which allows the detailed visualization of the phenomena inside the drop. The laser induced plasma or localized boiling at the drop front surface leads to a splash crown originating from the blast center. The various stages of this physical process are analyzed based on four characteristic time scales with different focal point positions and power densities. The initial blast on the drop front surface sends spherical shock waves into the drop. The spherical drop surface focuses the reflected rarefaction waves to the rear side of the drop, inducing cavitation bubbles as well as the ejections of liquid jets on the rear end. Various laser energy densities lead to different splash-crown-modes, which in turn affect the response of the opaque drop at the capillary time scale. The temporal evolution of the splash crown waist diameter follows a power law with respect to time, resembling characteristics of craters from mechanical impacts. Through the scaling law of the splash crown growth, we highlight the similarities among different splash processes that are triggered by various methods of point energy deposition.</div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"68 9","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0