Science China Physics, Mechanics & Astronomy最新文献_第9页

Omnidirectionally impedance-matched phononic crystals for full-parameter transformation acoustics 全参数变换声学的全方向阻抗匹配声子晶体

IF 6.4 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2024-12-19 DOI: 10.1007/s11433-024-2449-x

Chenkai Liu, Jie Luo, Xiaozhou Liu, Yun Lai

引用次数: 0

Application of fast differential scanning calorimetry in non-metallic glasses 快速差示扫描量热法在非金属玻璃中的应用

IF 6.4 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2024-12-19 DOI: 10.1007/s11433-024-2547-3

Xinyu Luo, Yonghao Sun, Weihua Wang

{"title":"Application of fast differential scanning calorimetry in non-metallic glasses","authors":"Xinyu Luo, Yonghao Sun, Weihua Wang","doi":"10.1007/s11433-024-2547-3","DOIUrl":"10.1007/s11433-024-2547-3","url":null,"abstract":"<div><p>Fast differential scanning calorimetry is an advanced thermal-analysis instrument. It can perform fast heating and fast cooling on matters with the maximum temperature of 1273 K, with scanning rates spanning five orders of magnitude and a maximum of many tens of thousands Kelvin per second. Thus, it is possible to vitrify a wide range of polymers, molecular liquids and alloys <i>in-situ</i>, enabling isothermal and non-isothermal testing for thermodynamic or kinetic investigations. In this work, the most recent results obtained with fast differential scanning calorimetry for non-metallic glasses are reviewed. The physics underlying the functions of the instrument is explained, along with the specializations of sample preparation, data correction, and result interpretation. The paper covers key findings in the field of non-metallic glass research, such as crystallization dynamics, liquid-liquid transition and glass stability. The purpose of this work is to provide beginners with high-quality data by preparing samples on chips and adjusting for thermal lags, and to help experienced scientists to investigate novel perspectives on metallic glasses using the same methodology as non-metallic glasses.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"68 6","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142870339","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

Five-user quantum virtual local area network with an AlGaAs entangled photon source 使用砷化镓纠缠光子源的五用户量子虚拟局域网

IF 6.4 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2024-12-18 DOI: 10.1007/s11433-024-2545-5

Cheng Qian, Hongkai Tian, Xu Jing, Yichen Liu, Zhe Chen, Huiran Luo, Yuan Du, Xiaodong Zheng, Tangsheng Chen, Yuechan Kong, Hua-Lei Yin, Dong Jiang, Bin Niu, Liangliang Lu

{"title":"Five-user quantum virtual local area network with an AlGaAs entangled photon source","authors":"Cheng Qian, Hongkai Tian, Xu Jing, Yichen Liu, Zhe Chen, Huiran Luo, Yuan Du, Xiaodong Zheng, Tangsheng Chen, Yuechan Kong, Hua-Lei Yin, Dong Jiang, Bin Niu, Liangliang Lu","doi":"10.1007/s11433-024-2545-5","DOIUrl":"10.1007/s11433-024-2545-5","url":null,"abstract":"<div><p>The promotion of quantum network applications demands the scalable connection of quantum resources. It is preferable to set up multiple logical networks coexisting on a single physical network infrastructure to accommodate a larger number of users. Here we present a quantum virtual network architecture that offers this level of scalability, without being constrained to a fixed physical-layer network relying solely on passive multiplexing components. The architecture can be understood as arising from the superposition of a fully connected entanglement distribution network and port-based virtual local area network, which group multiusers by access ports. In terms of hardware, we leverage a semiconductor chip with a high figure-of-merit modal overlap to directly generate high-quality polarization entanglement, and a streamlined polarization analysis module, which requires only one single-photon detector for each end user. We experimentally perform the BBM92 QKD protocol on the five-user quantum virtual network and demonstrate voice and image encryption on a campus area network. Our results may provide insights into the realization of large-scale quantum networks with integrated and cost-efficient photonic architecture.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"68 3","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859681","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

Advancing gravitational theory through the tetrahedral constellation gravitational wave observatory 通过四面体星座引力波观测站推进引力理论的发展

IF 6.4 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2024-12-16 DOI: 10.1007/s11433-024-2563-4

Yun-Yong Wang, Zhou-Jian Cao

引用次数: 0

Deciphering the α relaxation and the anelastic-to-plastic transition in the deep glassy state 破译了深玻璃态的α弛豫和非弹塑性转变

IF 6.4 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2024-12-16 DOI: 10.1007/s11433-024-2543-2

Qi Hao, Guanghui Xing, Eloi Pineda, Claudio Fusco, Laurent Chazeau, Jean-Marc Pelletier, Yunjiang Wang, Yong Yang, Jichao Qiao

{"title":"Deciphering the α relaxation and the anelastic-to-plastic transition in the deep glassy state","authors":"Qi Hao, Guanghui Xing, Eloi Pineda, Claudio Fusco, Laurent Chazeau, Jean-Marc Pelletier, Yunjiang Wang, Yong Yang, Jichao Qiao","doi":"10.1007/s11433-024-2543-2","DOIUrl":"10.1007/s11433-024-2543-2","url":null,"abstract":"<div><p>In contrast to their conventional crystalline counterparts, amorphous solids exhibit diverse dynamic relaxation mechanisms under external stimuli. The challenge to understanding their behavior lies in unifying microscopic dynamics, relaxation, and macroscopic deformation. This study establishes a potential link by quantifying the characteristic time of the anelastic-to-plastic transition through dynamic mechanical relaxation and stress relaxation tests across a wide temperature range in both the supercooled liquid and the glassy state. It is found that the stress relaxation time in the glassy solids follows an Arrhenius relationship, aligning with the main α relaxation time, and unveils a finding: α relaxation continues to govern deformation even below the glass transition, challenging previous assumptions of the role of secondary β relaxation. A hierarchically constrained atomic dynamics model rationalizes the temperature dependence of α relaxation and the transition from β to α relaxation, also providing evidence that the stretched exponent in the Kohlrausch-Williams-Watts equation can serve as an order parameter. This work highlights the role of α relaxation in the glassy state and contributes to elucidating the potential correlation between relaxation and deformation in amorphous materials.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"68 3","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142845069","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

Spin-selective and frequency-shift meta-holography based on reconfigurable origami chiral metasurface 基于可重构折纸手性超表面的自旋选择和频移元全息

IF 6.4 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2024-12-16 DOI: 10.1007/s11433-024-2534-7

Zhibiao Zhu, Lixin Jiang, Zhe Qin, Yongfeng Li, Jiafu Wang, Yuxiang Jia, Lin Zheng, Shaobo Qu

{"title":"Spin-selective and frequency-shift meta-holography based on reconfigurable origami chiral metasurface","authors":"Zhibiao Zhu, Lixin Jiang, Zhe Qin, Yongfeng Li, Jiafu Wang, Yuxiang Jia, Lin Zheng, Shaobo Qu","doi":"10.1007/s11433-024-2534-7","DOIUrl":"10.1007/s11433-024-2534-7","url":null,"abstract":"<div><p>Origami-based reconfigurable metasurfaces have emerged as a versatile paradigm for dynamically manipulating electromagnetic (EM) waves due to their advantages, such as low manufacturing cost, lightweight, and structural deformability. Three-dimensional (3D) deformation can intensify asymmetry among structures, making origami metasurfaces particularly suitable for realizing reconfigurable chiral responses. However, previous studies have primarily focused on modulating spectral properties, such as chiral switching and resonant frequency shifting. There remains ample room for further exploration in complex wavefront manipulation and holographic imaging applications. This paper proposes a simple and efficient deformation method for origami metasurfaces that transforms a spin-insensitive planar metasurface into a 3D metasurface by folding. The breaking of mirror symmetry induces a pronounced chiral response. The binary amplitude is modulated within each pixel. When folded at angles of +<i>θ</i> and −<i>θ</i>, the designed origami metasurface generates distinct images under left-handed circularly polarized (LCP) wave incidence. Meanwhile, holographic encryption is achieved under right-handed circularly polarized (RCP) wave incidence. Furthermore, by leveraging origami’s reconfigurability, the holographic imaging’s operating frequency can be shifted. The experimental results agree well with the numerical calculations and full-wave simulations, demonstrating the broad application potential of this method in areas such as multi-channel imaging, information encryption technologies, and stealth.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"68 2","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142845071","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

Spin freezing induced giant exchange bias in a doped Hund’s metal 自旋冻结在掺杂的亨德金属中诱导了巨大的交换偏置

IF 6.4 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2024-12-16 DOI: 10.1007/s11433-024-2531-7

Shunjiao Li, Dan Zhao, Jian Li, Baolei Kang, Min Shan, Yanbing Zhou, Xuyang Li, Tao Wu, Xianhui Chen

{"title":"Spin freezing induced giant exchange bias in a doped Hund’s metal","authors":"Shunjiao Li, Dan Zhao, Jian Li, Baolei Kang, Min Shan, Yanbing Zhou, Xuyang Li, Tao Wu, Xianhui Chen","doi":"10.1007/s11433-024-2531-7","DOIUrl":"10.1007/s11433-024-2531-7","url":null,"abstract":"<div><p>Exchange bias (EB) is a fundamental phenomenon in widespread information technologies. However, a comprehensive understanding of its microscopic origin remains a great challenge. One key issue in the debate is the role of frustration and disorder in the EB mechanism, which motivates the exploration of the EB effect in spin glass (SG) systems. Here, in the SG state of Cr-doped Hund’s metal CsFe<sub>2</sub>As<sub>2</sub>, we discover a giant EB effect with a maximum bias field of ∼2 T, which is almost two orders of magnitude larger than that of traditional alloy SGs. Our results indicate that the giant EB effect should originate from the exchange interactions at the natural boundaries between the tunable ferromagnetic-like (FM) regions around Cr dopants and the SG matrix, via which the FM spins are strongly pinned by the frozen spins in the SG matrix. In addition, the temperature-dependent and cooling-field-dependent EB behaviors could be interpreted well by the SG model with frustrated FM/SG boundaries, which provides an intuitive and explicit understanding of the impact of glassy parameters on the EB effect. All these results suggest that the correlated metals are promising directions for exploring the EB effect in the SG state.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"68 2","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142845072","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

Pressure induced superconducting dome in LaNiGa2 LaNiGa2中压力感应超导圆顶

IF 6.4 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2024-12-11 DOI: 10.1007/s11433-024-2536-6

Yanan Zhang, Dajun Su, Zhaoyang Shan, Yunshu Shi, Rui Li, Jinyu Wu, Zihan Yang, Kaixin Ye, Fei Zhang, Yanchun Li, Xiaodong Li, Chao Cao, Valentin Taufour, Lin Jiao, Michael Smidman, Huiqiu Yuan

引用次数: 0

Tetrahedron constellation of gravitational wave observatory 引力波观测站的四面体星座

IF 6.4 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2024-12-10 DOI: 10.1007/s11433-024-2519-6

Hong-Bo Jin, Cong-Feng Qiao

{"title":"Tetrahedron constellation of gravitational wave observatory","authors":"Hong-Bo Jin, Cong-Feng Qiao","doi":"10.1007/s11433-024-2519-6","DOIUrl":"10.1007/s11433-024-2519-6","url":null,"abstract":"<div><p>For the first time, we have introduced the tetrahedron constellation of gravitational wave observatory (TEGO) composed of four identical spacecrafts (S/Cs). The laser telescopes and their pointing structures are mounted on the S/C platform and are evenly distributed at three locations 120 degrees apart. These structures form automatically a stable mass center for the platform. The time delay interferometry (TDI) is used to suppress the frequency noise of gravitational wave (GW) detector. The unequal-arm Michelson TDI configuration and the Sagnac TDI configuration are equally effective at eliminating the laser frequency noise based on the TEGO configuration. Furthermore, compared with the configurations of LISA, Taiji, and TianQin, the TEGO has more combinations of optical paths in its TDI system sensitive to GW signals. The six arms of TEGO are simultaneously sensitive to the six polarization modes of GWs. The sensitivity implies that GW modes beyond the predictions of general relativity (GR) can be detected directly. For instance, a scalar longitudinal mode of GWs, which is not predicted by GR, has been identified as a dominant polarization component. This mode is found to be evident in the response amplitudes of the TEGO arms, such as between S/C1 and S/C4, and S/C3 and S/C4, at certain orbital positions.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"68 2","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142821372","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

Optimizing frequency allocation for superconducting quantum processors with frequency-tunable qubits 优化频率可调量子比特超导量子处理器的频率分配

IF 6.4 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2024-12-10 DOI: 10.1007/s11433-024-2527-3

Bi-Ying Wang, Wuxin Liu, Xiangyu Chen, Shu Xu, Jiangyu Cui, Man-Hong Yung

引用次数: 0