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IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-07-31 DOI: 10.1109/TASC.2025.3593173

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Overcoming Chiral‐Optoelectronic Trade‐Off in Two‐Dimensional Halide Perovskites for Circularly Polarized Photodetectors 圆极化光电探测器中克服二维卤化物钙钛矿的手性-光电权衡

IF 11 1区物理与天体物理

Laser & Photonics Reviews Pub Date : 2025-07-31 DOI: 10.1002/lpor.202501468

Yarong Gu, Ziqing Li, Ming Deng, Xinyu Zhang, Ying Hu, Li Su, Xiaosheng Fang

{"title":"Overcoming Chiral‐Optoelectronic Trade‐Off in Two‐Dimensional Halide Perovskites for Circularly Polarized Photodetectors","authors":"Yarong Gu, Ziqing Li, Ming Deng, Xinyu Zhang, Ying Hu, Li Su, Xiaosheng Fang","doi":"10.1002/lpor.202501468","DOIUrl":"https://doi.org/10.1002/lpor.202501468","url":null,"abstract":"Two‐dimensional (2D) perovskites hold great promise for optoelectronic devices due to the flexible tunability of chiral optical activity and optoelectronic properties. However, the trade‐off between strong chiral effect and efficient charge transport restricts their development in high‐performance circularly polarized light (CPL) detection. In this work, a tailored achiral‐chiral cation mixing strategy is proposed to improve the intermolecular forces and out‐of‐plane octahedral tilt in the chiral perovskite, which effectively promotes chirality transfer and van der Waals forces tuned vertical growth. Further, a chiral 2D perovskite‐based CPL photodetector is constructed with balanced high absorption anisotropy (gabs) and photocurrent anisotropy (gIph). Compared with materials obtained with pure chiral cations, the maximum gabs of this chiral 2D perovskite increased by 7.33 times. The enhanced chiroptical activity and in‐plane transport in vertically oriented chiral 2D perovskites endowed the self‐powered CPL device with outstanding performance and a record gIph of 0.72. This work opens a reasonable paradigm of chiral 2D perovskite photodetectors in information encryption.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"99 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144747064","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}

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IEEE Transactions on Applied Superconductivity Information for Authors IEEE应用超导信息汇刊

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-07-31 DOI: 10.1109/TASC.2025.3559819

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IEEE Transactions on Applied Superconductivity Subject Categories for Article Numbering Information 用于物品编号信息的应用超导主题分类

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-07-31 DOI: 10.1109/TASC.2025.3586165

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IEEE Transactions on Applied Superconductivity Information for Authors IEEE应用超导信息汇刊

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-07-31 DOI: 10.1109/TASC.2025.3559781

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Detecting modeling bias with continuous time flow models on weak lensing maps 弱透镜映射上连续时间流模型的建模偏差检测

IF 6.4 2区物理与天体物理

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-07-31 DOI: 10.1088/1475-7516/2025/08/004

Kangning Diao, Biwei Dai and Uroš Seljak

{"title":"Detecting modeling bias with continuous time flow models on weak lensing maps","authors":"Kangning Diao, Biwei Dai and Uroš Seljak","doi":"10.1088/1475-7516/2025/08/004","DOIUrl":"https://doi.org/10.1088/1475-7516/2025/08/004","url":null,"abstract":"Simulation-based inference (SBI) provides a powerful framework for extracting rich information from nonlinear scales in current and upcoming cosmological surveys, and ensuring its robustness requires stringent validation of forward models. In this work, we recast forward model validation as an out-of-distribution (OoD) detection problem within the framework of machine learning (ML)-based SBI. We employ probability density as the metric for OoD detection, and compare various density estimation techniques, demonstrating that field-level probability density estimation via continuous time flow models (CTFM) significantly outperforms feature-level approaches that combine scattering transform (ST) or convolutional neural networks (CNN) with normalizing flows (NFs), as well as NF-based field-level estimators, as quantified by the area under the receiver operating characteristic curve (AUROC). Our analysis shows that CTFM not only excels in detecting OoD samples but also provides a robust metric for model selection. Additionally, we verified CTFM maintains consistent efficacy across different cosmologies while mitigating the inductive biases inherent in NF architectures. Although our proof-of-concept study employs simplified forward modeling and noise settings, our framework establishes a promising pathway for identifying unknown systematics in the cosmology datasets.","PeriodicalId":15445,"journal":{"name":"Journal of Cosmology and Astroparticle Physics","volume":"30 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144763346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

“Impact of molybdenum doping on the optoelectronic and structural properties of CsPbIBr2 perovskite solar cell” [Physica B: Condensed Matter, 678 (2024), 415758] “钼掺杂对CsPbIBr2钙钛矿太阳能电池光电性能和结构性能的影响”[物理学报B：凝聚态物质，678 (2024),415758]

IF 2.8 3区物理与天体物理

Physica B-condensed Matter Pub Date : 2025-07-31 DOI: 10.1016/j.physb.2025.417639

M.I. Khan, Ali Mujtaba, Saddam Hussain, M. Atif, Ihtisham-ul Haq, Ahmed Iftikhar Qureshi, Wajeehah Shahid, Asghar Ali

引用次数: 0

Three-dimensional micro-displacement sensor based on egg-beater like SMF for tactile sensing applications 基于打蛋器的三维微位移传感器，如触觉传感应用的SMF

IF 5 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-07-31 DOI: 10.1016/j.optlastec.2025.113645

Mengjie Wang , Xin Ding , Weiguan Zhang , Jingyi Hou , Nan Chen , Rongfu Zhang

{"title":"Three-dimensional micro-displacement sensor based on egg-beater like SMF for tactile sensing applications","authors":"Mengjie Wang , Xin Ding , Weiguan Zhang , Jingyi Hou , Nan Chen , Rongfu Zhang","doi":"10.1016/j.optlastec.2025.113645","DOIUrl":"10.1016/j.optlastec.2025.113645","url":null,"abstract":"<div><div>We propose an egg-beater like single mode fiber (EBSMF) structure for highly sensitive three-dimensional (3D) micro-displacement measurement. The EBSMF features a simple and effective structure, constructed by cascading two vertically distributed elliptic single mode fibers (SMFs). Each elliptic SMF is fabricated by bending a SMF to different radii, thereby altering the refractive index (RI) distribution in both the core and cladding, which enhances the evanescent field. This structure can be regarded as a Mach-Zehnder interferometer. Under external micro-displacement, the radius of the elliptic SMF changes, leading to variations in the RI of the core and cladding, which in turn causes shifts in the resonance dips. The deformation of a single elliptic SMF along the axis of symmetry and perpendicular to the axis of symmetry results in opposite resonance dip shifts. By vertically stacking two elliptic SMFs with different radii, we exploit two distinct dip shift directions to enable precise recognition of displacements along the X, Y, and Z axes. To evaluate the performance of the proposed sensor, four samples with varying radii were fabricated. Experimental results demonstrate displacement sensitivities of 20 pm/μm (X-axis), 27 pm/μm (Y-axis), and 337 pm/μm (Z-axis) within displacement ranges of 0–180 μm (X, Y) and 0–60 μm (Z). The proposed sensor offers advantages in terms of ease of fabrication, high sensitivity and linearity, making it a promising candidate for tactile sensing applications. Additionally, when packaged with a flexible material, the proposed sensor can predict object surface morphology, mimicking the sensing capabilities of human fingers. Notably, the tactile sensor achieves a minimum resolution of 50 μm and response time of 0.9 s, which is comparable to that of human touch.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"192 ","pages":"Article 113645"},"PeriodicalIF":5.0,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144758098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Deterministically separable polarization-entangled photons from battery-powered diode lasers 从电池供电的二极管激光器中确定可分离的偏振纠缠光子

IF 7.6 1区物理与天体物理

npj Quantum Information Pub Date : 2025-07-31 DOI: 10.1038/s41534-025-01073-2

Zacharie M. Léger, Trevor J. Stirling, Meng Lon Iu, Amr S. Helmy

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IEEE Transactions on Applied Superconductivity Publication Information IEEE应用超导学报出版信息

IF 1.8 3区物理与天体物理

IEEE Transactions on Applied Superconductivity Pub Date : 2025-07-31 DOI: 10.1109/TASC.2025.3586169

引用次数: 0