Physics Letters A最新文献_第8页

A dynamically tunable terahertz perfect absorber based on surface patterned graphene nanofilm 基于表面图像化石墨烯纳米膜的动态可调谐太赫兹完美吸收体

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-04-12 DOI: 10.1016/j.physleta.2025.130550

Can Gu , Huijuan Niu , Yuxin Zhu , Limei Qi , Hefu Li , Chenglin Bai

{"title":"A dynamically tunable terahertz perfect absorber based on surface patterned graphene nanofilm","authors":"Can Gu , Huijuan Niu , Yuxin Zhu , Limei Qi , Hefu Li , Chenglin Bai","doi":"10.1016/j.physleta.2025.130550","DOIUrl":"10.1016/j.physleta.2025.130550","url":null,"abstract":"<div><div>This article propounds a wideband, multi-peak and tunable terahertz (THz) absorber composed of symmetrically patterned graphene-dielectric-metal (SPG-d-M) structures. The findings from the show that the absorptivity of the proposed SPG-d-M structure at 2.33 to 6.10 THz exceeds 90 % when the Fermi level E<sub>f</sub> = 1.05 eV. Furthermore, by modulating the external bias voltage applied to graphene, it is possible to modify its Fermi level from 0 eV to 1.25 eV, resulting in a change in absorptivity from 9.86 % to nearly complete absorption. The comparison of various top-layer graphene patterns demonstrates the superiority of our proposed SPG. We elucidate the physical mechanism of wide-band absorption by analyzing the field distribution of the structure at various peak frequencies. The SPG-d-M absorber achieves polarization angle insensitivity, and the absorption efficacy is maintained even at oblique angles of incidence. Consequently, the absorber demonstrates considerable potential for applications in the domains of medical imaging and stealth technology.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"547 ","pages":"Article 130550"},"PeriodicalIF":2.3,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143838865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Automated real-time evaluation system for Laser-induced damage of optical components based on microscopic scattering dark-field imaging method 基于微散射暗场成像方法的光学元件激光损伤自动实时评估系统

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-04-11 DOI: 10.1016/j.physleta.2025.130530

Shiling Wang , Yubo Liu , Zhitian Niu , Jing Yu , Ming Kong , Dong Liu

{"title":"Automated real-time evaluation system for Laser-induced damage of optical components based on microscopic scattering dark-field imaging method","authors":"Shiling Wang , Yubo Liu , Zhitian Niu , Jing Yu , Ming Kong , Dong Liu","doi":"10.1016/j.physleta.2025.130530","DOIUrl":"10.1016/j.physleta.2025.130530","url":null,"abstract":"<div><div>Laser-induced damage to optical components is a crucial factor restricting laser output power in Inertial Confinement Fusion (ICF) systems. To evaluate the anti-laser damage performance of optical components, bright-field microscopes are prevalently employed for online damage monitoring. The state and quantity of damage points are manually judged by the human eye, which inevitably curtails the efficiency and precision. An imaging system predicated on dark-field microscopic scattering is proposed to enhance the efficiency without interfering with the pulsed laser irradiation process. The included synchronous operation module is harnessed to orchestrate the operational sequence of each hardware constituent. Concurrently, damage detection is executed based on local threshold segmentation and clustering algorithms in accordance with diverse detection demands. The distribution images and statistical information of weak damages can be obtained. It is also expected to achieve online monitoring of the damage state of the terminal optical components of the ICF equipment.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"546 ","pages":"Article 130530"},"PeriodicalIF":2.3,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143821343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Plasmonic coupling of gold nanosheet dimers for sensitive response of the environment 等离子体耦合的金纳米片二聚体对环境的敏感响应

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-04-11 DOI: 10.1016/j.physleta.2025.130537

Ziyun Wang , Mengwei Ma , Kaifeng Deng, Yifan Zheng, Jinshen Lan, Ziyan Wang, Xuanli Zheng, Shengli Huang, Shuping Li, Junyong Kang

{"title":"Plasmonic coupling of gold nanosheet dimers for sensitive response of the environment","authors":"Ziyun Wang , Mengwei Ma , Kaifeng Deng, Yifan Zheng, Jinshen Lan, Ziyan Wang, Xuanli Zheng, Shengli Huang, Shuping Li, Junyong Kang","doi":"10.1016/j.physleta.2025.130537","DOIUrl":"10.1016/j.physleta.2025.130537","url":null,"abstract":"<div><div>Plasmonic coupling of the nanoparticles plays a key role in the performance, but most previous studies have focused on the isolated nanoparticles, nanoparticle dimers with round surface or nanoparticle arrays. Here plasmonic properties of gold nanosheet monomers and dimers in rectangular structure are investigated. The plasmon resonance of the monomers is found to be primarily controlled by the light polarization, rather than the incident orientation. The strongest resonance is achieved when the polarization aligns with the long axis of the nanosheet. For the dimers, the strong coupling leads to the appearance of multistage plasmonic peaks and significant amplification of the resonant bands. Structural changes in the dimers induce the band shift and intensity variation. The optimal dimer displays a strong plasmonic coupling with a maximum electric field enhancement and a tremendous sensitivity of 748.3 nm/RIU, which provides valuable insights for the design and applications of noble metal nanostructures.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"547 ","pages":"Article 130537"},"PeriodicalIF":2.3,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143834732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Controllable dynamics of circular Airy modulation vortex beams in fractional nonlinear optical systems with two vortex phase modulation structural models 基于两种旋涡相位调制结构模型的分数阶非线性光学系统中圆形Airy调制涡旋光束的可控动力学

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-04-11 DOI: 10.1016/j.physleta.2025.130535

Tong Lei , Min Zou , Bin Zhong , Mingwei Liu , Chao Tan

{"title":"Controllable dynamics of circular Airy modulation vortex beams in fractional nonlinear optical systems with two vortex phase modulation structural models","authors":"Tong Lei , Min Zou , Bin Zhong , Mingwei Liu , Chao Tan","doi":"10.1016/j.physleta.2025.130535","DOIUrl":"10.1016/j.physleta.2025.130535","url":null,"abstract":"<div><div>The transmission dynamics of circular Airy modulation vortex beams (CAMVBs) with two distinct vortex phase modulation modes are investigated within a fractional-order Schrödinger optical system using a stepwise Fourier method. In the linear regime, the orbital angular momentum (OAM) determines the rotational direction of CAMVBs without altering their shape or transmission properties, with higher OAM splitting the beam into multiple spots (<span><math><mrow><mi>L</mi><mo>=</mo><mi>l</mi></mrow></math></span> vortex modulation mode). For the second vortex modulation mode (<span><math><mrow><mi>L</mi><mo>=</mo><mi>r</mi><mi>l</mi></mrow></math></span>), CAMVBs exhibit an Archimedean helix-like pattern influenced by OAM. By tuning the topological charge, phase folding number, modulation coefficient, initial phase, and Lévy index, tailored spot distributions can be achieved, offering potential in optical splitting and control. In nonlinear Kerr media, vortex solitons emerge, with their number matching the phase folding number. The solitons’ configuration depends on phase modulation and nonlinear strength, enabling information encoding through beam parameters. These findings hold promise for secure communication and advanced optical systems.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"547 ","pages":"Article 130535"},"PeriodicalIF":2.3,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143834733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

VO2-based terahertz multifunctional spin-decoupled reflective coding metasurface 基于vo2的太赫兹多功能自旋解耦反射编码超表面

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-04-11 DOI: 10.1016/j.physleta.2025.130525

Yuxin Yan , Jianhui Xun , Song Tian , Juan Xu

{"title":"VO2-based terahertz multifunctional spin-decoupled reflective coding metasurface","authors":"Yuxin Yan , Jianhui Xun , Song Tian , Juan Xu","doi":"10.1016/j.physleta.2025.130525","DOIUrl":"10.1016/j.physleta.2025.130525","url":null,"abstract":"<div><div>Achieving independent control of left- and right-handed circularly polarized waves remains a significant challenge in current research. In this study, we propose a spin-decoupled multifunctional coding metasurface based on VO2. The design integrates two traditional approaches, Pancharatnam-Berry (PB) phase coding and propagation phase coding, it can independently manipulate left- and right-handed circularly polarized waves. In addition, VO2 is introduced into the metasurface unit patch, and three different functions can be performed by changing the ambient temperature and the type and frequency of the incident electromagnetic wave. At temperature below 68 °C, the metasurface deflects incident left-handed circularly polarized waves and generates a vortex beam with topological charge <em>l</em> = 2 for right-handed circularly polarized waves. At temperatures above 68 °C, the metasurface focuses incident linearly polarized waves. The proposed metasurface exhibits frequency multiplexing, miniaturization, and multifunctionality, holds significant potential for applications in wireless communication and related fields.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"548 ","pages":"Article 130525"},"PeriodicalIF":2.3,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143854669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Two-dimensional ferromagnetic high order topological insulators CrSX(X=Cl, Br, I) 二维铁磁高阶拓扑绝缘体CrSX（X=Cl, Br， I）

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-04-11 DOI: 10.1016/j.physleta.2025.130538

Qinhui Shen, Minping Zhang, Guangtao Wang

引用次数: 0

Symmetric pearcey gaussian vortex beams with the astigmatic phase 具有像散相位的对称均匀高斯涡旋光束

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-04-11 DOI: 10.1016/j.physleta.2025.130539

Jianxi Peng , Zesheng Fang , Peiwen Peng , Dongmei Deng

引用次数: 0

Phase-detection-based high-sensitivity refractive index sensing via chiral BIC metasurfaces 基于相位检测的手性BIC超表面高灵敏度折射率传感

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-04-11 DOI: 10.1016/j.physleta.2025.130540

Shuang Yang , Xin Zhang , Jia Liu , Hengli Feng , Hongyan Meng , Yang Jia , Yachen Gao

引用次数: 0

Solitonic proton transport in (A−H⋯B−H⋯)n systems A-H⋯B-H⋯)n 系统中的孤子质子传输

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-04-10 DOI: 10.1016/j.physleta.2025.130533

Yoshiki Kashimori

{"title":"Solitonic proton transport in (A−H⋯B−H⋯)n systems","authors":"Yoshiki Kashimori","doi":"10.1016/j.physleta.2025.130533","DOIUrl":"10.1016/j.physleta.2025.130533","url":null,"abstract":"<div><div>Proton transport along hydrogen-bonded (HB) chains is essential for achieving high electric conductivity in ice crystals and facilitating bioenergetic transport within membrane proteins. Soliton models have been proposed to explain the mechanism of the proton transport, with their dynamics studied both analytically and numerically. In this study, I examine how the soliton dynamics is affected by the asymmetry of double-well potential and the alternative array of two types of heavy ions. As the special cases, the HB chain also contains a symmetric double-well potential and one type of heavy ions. I present a soliton model that has a new interaction between a proton and its neighboring heavy ions, which is valid for the HB chain with an asymmetric double-well potential. A mathematical analysis using a continuum approximation demonstrates that the newly identified interaction produces solitons in the coupled motion of protons and heavy ions. The outcome is influenced by the type of heavy ions involved and the symmetry of the double-well potential. It is also found that the proton transport in the HB chain with two types of heavy ions is represented by solitons with an effective mass of these heavy ions. Furthermore, numerical simulations are performed to examine the stability of solitons in the discretized HB model. They also show a kink-like solution in the HB chain with an asymmetric potential and demonstrate the effects of thermal fluctuations and an electric field on the stability of solitons.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"548 ","pages":"Article 130533"},"PeriodicalIF":2.3,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143851547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Validation tests of GBS quantum computers give evidence for quantum advantage with a decoherent target GBS量子计算机的验证测试为退相干目标的量子优势提供了证据

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-04-10 DOI: 10.1016/j.physleta.2025.130529

Alexander S. Dellios, Bogdan Opanchuk, Ned Goodman, Margaret D. Reid, Peter D. Drummond

{"title":"Validation tests of GBS quantum computers give evidence for quantum advantage with a decoherent target","authors":"Alexander S. Dellios, Bogdan Opanchuk, Ned Goodman, Margaret D. Reid, Peter D. Drummond","doi":"10.1016/j.physleta.2025.130529","DOIUrl":"10.1016/j.physleta.2025.130529","url":null,"abstract":"<div><div>Computational validation is vital for large-scale quantum computers. One needs computers that are both fast and accurate along with tests that encapsulate the complexity of such networks. Here, we utilize positive-P phase-space simulations of grouped count probabilities (GCPs) as a fingerprint for verifying multi-mode data from large Gaussian boson sampling (GBS) quantum computers that claim quantum computational advantage. Such simulations allow one to distinguish between true non-classical correlations generated by an experiment, and those obtained from a classical algorithm that replicates the photo-detection measurements. We use these methods to verify the outputs of a 144-channel GBS experiment, where we show data is far enough from the ideal ground truth distribution that it is beaten by a classical algorithm implemented using purely classical states, although it fails against a best-fit ground truth that includes decoherence. This gives evidence consistent with quantum computational advantage for a modified problem: a non-classical, partly thermalized ground truth model. Even with this model, discrepancies are present, indicating possible parameter estimation errors. Randomly generated tests from multiple high-order grouped counts are also performed. Each of these can be measured and simulated, providing a verification method that may be hard to replicate classically.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"549 ","pages":"Article 130529"},"PeriodicalIF":2.3,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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