Nanophotonics最新文献

Local Droplet Etching‐Assisted Quantum Dot Epitaxy for Telecom C‐Band Quantum Light Emitters 电信C波段量子光发射器的局部液滴蚀刻辅助量子点外延

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2026-10-16 DOI: 10.1002/nap2.70310

Karolina E. Połczyńska,Paweł Wyborski,Michał Gawełczyk,Shima Kadkhodazadeh,Battulga Munkhbat,Stefano Sanguinetti,Elizaveta Semenova

{"title":"Local Droplet Etching‐Assisted Quantum Dot Epitaxy for Telecom C‐Band Quantum Light Emitters","authors":"Karolina E. Połczyńska,Paweł Wyborski,Michał Gawełczyk,Shima Kadkhodazadeh,Battulga Munkhbat,Stefano Sanguinetti,Elizaveta Semenova","doi":"10.1002/nap2.70310","DOIUrl":"https://doi.org/10.1002/nap2.70310","url":null,"abstract":"ABSTRACT Significant progress in quantum light sources for quantum communication applications requires reproducible and symmetric quantum emitters acting as single‐photon sources capable of generating entangled photons on demand at specific telecom wavelengths. Here, we propose telecom‐emitting epitaxial quantum dots (QDs) fabricated by metal‐organic vapor phase epitaxy (MOVPE) using the local droplet etching (LDE) approach. The resulting well‐defined, low‐density (/) QDs based on are formed in symmetric LDE nanoholes in . Detailed transmission electron microscopy provides comprehensive insight into the structural properties of the QDs. Photoluminescence spectroscopy reveals single QD emission lines (linewidth meV, fine structure splitting μeV) with negligible impact of nonradiative processes, with decay ns comparable to theoretical simulations, whereas second‐order autocorrelation measurements confirm clear single‐photon emission with under above‐band continuous‐wave excitation and under pulsed excitation. Precise numerical modeling, combining multiband and configuration interaction methods, identifies thermal excitation pathways that explain the persistence of emission up to liquid‐nitrogen temperatures. These results highlight the versatility of the LDE approach for integrating new material systems and provide a promising foundation for future studies aimed at scalable fabrication of quantum light sources with tailored emission properties.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"52 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149208933","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

Learning Adaptive Filtering in the Fourier Domain for Fringe Pattern Analysis: A New Reconstruction Paradigm in Digital Holographic Interferometry 用于条纹分析的傅立叶域学习自适应滤波：数字全息干涉测量中的一种新的重建范式

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2026-10-16 DOI: 10.1002/nap2.70282

Youxing Li,Lingzhi Meng,Zhiyuan Xu,Hongwei Li,Kai Zhang,Yaoqing Xie,Libo Yuan

{"title":"Learning Adaptive Filtering in the Fourier Domain for Fringe Pattern Analysis: A New Reconstruction Paradigm in Digital Holographic Interferometry","authors":"Youxing Li,Lingzhi Meng,Zhiyuan Xu,Hongwei Li,Kai Zhang,Yaoqing Xie,Libo Yuan","doi":"10.1002/nap2.70282","DOIUrl":"https://doi.org/10.1002/nap2.70282","url":null,"abstract":"ABSTRACT Single‐frame fringe pattern analysis in digital holographic interferometry (DHI) is essential for precision phase measurement under dynamic conditions. Recent advances in deep learning within optical metrology are transforming the reconstruction paradigm from physics‐based modeling toward data‐driven learning. However, most existing neural networks either rely on learning statistical visual features without guidance from physical principles or fail to dynamically adjust inference parameters based on the input instance after training, thereby limiting the robustness and generalization capacity on unseen data. To this end, a novel adaptive spectrum filtering neural network (ASFNet) is proposed for phase measurement. ASFNet incorporates a physics‐aware spectral filtering block that dynamically adapts the inference process to each input instance, enabling robust and generalizable phase reconstruction under varying and unseen conditions—moving beyond static, dataset‐specific statistical modeling toward instance‐aware adaptive reconstruction. Moreover, a forward model is constructed to generate realistic simulation data for network training, reducing the reliance on experimentally labeled data. Simulation results on 400 test samples demonstrate the superiority of ASFNet in terms of both pixel‐wise accuracy and visual quality. Experimental results further confirm its strong generalization capability on unseen data, achieving high reconstruction fidelity comparable to that of hand‐tuned, physics‐based methods.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"199 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149208936","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

Interferometric Near‐Field Scanning Optical Microscopy via Phase Conjugation of a Multimode Fiber Probe 多模光纤探头相位共轭干涉近场扫描光学显微镜

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2026-10-16 DOI: 10.1002/nap2.70333

Juntaek Oh,Young‐Ho Jin,Sungsam Kang,Myung‐Ki Kim,Wonshik Choi

{"title":"Interferometric Near‐Field Scanning Optical Microscopy via Phase Conjugation of a Multimode Fiber Probe","authors":"Juntaek Oh,Young‐Ho Jin,Sungsam Kang,Myung‐Ki Kim,Wonshik Choi","doi":"10.1002/nap2.70333","DOIUrl":"https://doi.org/10.1002/nap2.70333","url":null,"abstract":"ABSTRACT Interferometric near‐field scanning optical microscopy (NSOM) enables simultaneous measurement of both the amplitude and phase of the optical near field. In its aperture‐type implementation, the local field is collected through a sub‐wavelength aperture and an optical fiber. The choice of this fiber imposes an inherent trade‐off between signal strength and phase fidelity. Single‐mode fiber probes maintain phase fidelity but suffer from low signal intensity, whereas multimode fiber probes offer higher throughput but introduce severe phase distortions. Here, we present phase‐conjugation interferometric NSOM (PCI‐NSOM), which overcomes this limitation. The output field of the multimode fiber is measured by off‐axis holography, and its phase conjugate is displayed on a spatial light modulator, converting the scrambled speckle into a planar wavefront that focuses to a single point in Fourier space. At the focal pixel of the detector, the correction enhances the intensity by up to ∼165‐fold. We demonstrate PCI‐NSOM by imaging surface plasmon polaritons on a gold grating, obtaining accurate phase maps where uncorrected multimode collection fails through modal dispersion and single‐mode collection through a low signal‐to‐noise ratio. PCI‐NSOM thus provides a practical route to high‐sensitivity phase‐resolved nanoscale optical characterization.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"6 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149208934","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

Widely Tunable Dual‐Wavelength Spacing via Temperature Control in A Single Self‐Assembled Nanowire‐Well Chip With Stress Modification 通过温度控制在应力修正的单自组装纳米线阱芯片中广泛可调谐的双波长间隔

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2026-10-16 DOI: 10.1002/nap2.70331

Yuhong Wang,Yiwei Zhang,Zihan Jiang,Jian Wu,Chunqing Gao

{"title":"Widely Tunable Dual‐Wavelength Spacing via Temperature Control in A Single Self‐Assembled Nanowire‐Well Chip With Stress Modification","authors":"Yuhong Wang,Yiwei Zhang,Zihan Jiang,Jian Wu,Chunqing Gao","doi":"10.1002/nap2.70331","DOIUrl":"https://doi.org/10.1002/nap2.70331","url":null,"abstract":"ABSTRACT Dual‐wavelength single‐chip laser sources not only provide multiparameter measurement, but also provide a promising approach for terahertz (THz) signal generation. THz emission relies on the wavelength (or frequency) difference between dual lasing. Wide tunability of the dual‐wavelength difference, therefore, enables widely tunable THz signals for more flexible applications. In this paper, we propose a simple approach and mechanism for achieving dual‐wavelength emission with a widely tunable center‐wavelength spacing on a single chip via unified temperature control. It is based on an InGaAs self‐assembled nanowire‐quantum well composite structure with laterally periodic nanowire‐well and pure‐well parts contributing to dual‐wavelength emission. Due to distinct stress conditions in the two parts, their emission peaks exhibit markedly different temperature‐dependencies. As the temperature increases from 289 K to 321 K, the emission peak of the nanowire‐well part only varies from ∼930.6 to ∼931.8 nm (Δ ≈ 1.2 nm), while that of the pure‐well part shows a pronounced redshift from ∼963.8 to ∼985.7 nm (Δ ≈ 21.9 nm). Consequently, the dual‐wavelength spacing expands from ∼33.2 to ∼53.9 nm (Δ ≈ 20.7 nm), corresponding to a tuning rate of ∼0.65 nm/K. This research holds significant importance for enhancing the dynamic‐adaptability and compactness of dual‐wavelength semiconductor lasers for advanced applications.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"231 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149208929","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

Neural Adjoint Inverse Design of Three‐Dimensional Nanophotonic Devices 三维纳米光子器件的神经伴随逆设计

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2026-10-16 DOI: 10.1002/nap2.70334

Chanik Kang,Hyewon Suk,Ikbeom Jang,Haejun Chung

{"title":"Neural Adjoint Inverse Design of Three‐Dimensional Nanophotonic Devices","authors":"Chanik Kang,Hyewon Suk,Ikbeom Jang,Haejun Chung","doi":"10.1002/nap2.70334","DOIUrl":"https://doi.org/10.1002/nap2.70334","url":null,"abstract":"ABSTRACT Volumetric meta‐optics have emerged as a compact high‐performance platform for advanced imaging, color routing in image sensors, and on‐chip wavefront control. Realizing such devices depends on solving a high‐dimensional nonconvex inverse‐design problem governed by Maxwell's equations. Adjoint optimization is the standard route to gradients, yet broadband three‐dimensional (3D) design typically requires thousands of full‐wave forward/adjoint simulations, making industrial‐scale optimization prohibitively slow. To address this bottleneck, a neural adjoint method is introduced, in which a solver‐supervised Fourier neural operator (FNO) directly predicts dense, per‐voxel 3D adjoint gradient fields from a voxelized permittivity volume. To preserve the sharp, resonance‐driven sensitivity peaks that single‐pass operator networks tend to oversmooth, a stage‐wise FNO is proposed, in which successive stages refine residual errors with progressively higher‐frequency emphasis. A domain‐specific dataset is curated from paired forward/adjoint finite‐difference time‐domain (FDTD) simulations spanning three volumetric tasks: spectral sorting (color routers), achromatic focusing (metalenses), and waveguide mode conversion. Across all benchmarks, the surrogate‐driven optimization attains figures of merit within 86%–99% of rigorous FDTD‐based adjoint optimization whilst reducing end‐to‐end design time from hours to seconds, with speedups exceeding . These results establish a pathway toward fast large‐scale volumetric meta‐optical design enabled by neural‐operator surrogates.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"11 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149208930","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

Photoinduced Plasmon‐Polariton Mediated Energy Storage 光致等离子体-极化子介导的能量存储

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2026-10-16 DOI: 10.1002/nap2.70313

Nitzan Shauloff,Yury Turkulets,Ilan Shalish,Yossi Abulafia,Zeev Zalevsky,Raz Jelinek

{"title":"Photoinduced Plasmon‐Polariton Mediated Energy Storage","authors":"Nitzan Shauloff,Yury Turkulets,Ilan Shalish,Yossi Abulafia,Zeev Zalevsky,Raz Jelinek","doi":"10.1002/nap2.70313","DOIUrl":"https://doi.org/10.1002/nap2.70313","url":null,"abstract":"ABSTRACT Development of new means of remotely induced energy storage is important for varied applications, including minimization of energy loss and heat effects in computation devices, solar energy generation, and data transmission. Here, we demonstrate a new concept by which photoinduced energy storage is facilitated through plasmon‐polariton generation, propagation, and supercapacitor charging. Specifically, we designed a simple nano‐device, allowing conversion of photonic energy into plasmons, transmitting the plasmons over micrometer‐scale distances, and storing the energy in nano‐supercapacitors. The new platform may potentially minimize heat‐associated energy loss in computer circuitry and data processors, as energy is transmitted optically rather than electronically and thus it does not experience electrical resistivity. Moreover, the concept of photoinduced plasmonic mode that serves as an intermediary for electromagnetic energy transfer that charges supercapacitor, may theoretically be used to form the basis for a new “plasmonic solar cell” technology comprising simple and readily fabricated in‐plane modules which do not require expensive semiconductor materials or complex fabrication schemes encountered in photovoltaic cells.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"411 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149208932","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

Dielectric Nanoparticle Dimers on a Mirror for Enhanced Photoluminescence of Quantum Dots 介质纳米粒子二聚体在镜面上增强量子点的光致发光

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2026-10-14 DOI: 10.1002/nap2.70319

Rafael Ramos Uña,Braulio García-Cámara,Ángela I. Barreda

引用次数: 0

Phase‐Controlled Asymmetric Resonances for Enhanced Spectral Slope in a Ge‐OI Microring Resonator at 4.2 μm 4.2 μm Ge - OI微环谐振腔中相位控制的非对称共振增强了光谱斜率

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2026-10-14 DOI: 10.1002/nap2.70321

Jinha Lim,SangHyeon Kim

{"title":"Phase‐Controlled Asymmetric Resonances for Enhanced Spectral Slope in a Ge‐OI Microring Resonator at 4.2 μm","authors":"Jinha Lim,SangHyeon Kim","doi":"10.1002/nap2.70321","DOIUrl":"https://doi.org/10.1002/nap2.70321","url":null,"abstract":"ABSTRACT Microring resonators (MRRs) are key components of photonic integrated circuits for filtering, modulation, and spectroscopic sensing. In the mid‐infrared (mid‐IR), asymmetric resonances are attractive because their steep local spectral transitions can enhance wavelength discrimination in compact resonant devices. Here, we demonstrate geometry‐controlled asymmetric resonances in a germanium‐on‐insulator (Ge‐OI) MRR at 4.2 μm by introducing a single subwavelength air hole into the bus‐waveguide coupling region as a localized phase perturbation. Effective‐index analysis shows that the hole geometry estimates a controllable phase shift Δ ϕ of up to 0.82π rad, enabling systematic evolution from a nearly symmetric Lorentzian resonance to a strongly asymmetric Fano‐like response. The results are explained by a phase‐modified transmission model and are described using a weighted Fano–Lorentz formalism, which explains the resonance evolution in the ( δ , η ) parameter space. Among our devices, the optimum point is achieved at an intermediate perturbation rather than at the maximum Δ ϕ , yielding a loaded quality factor Q of 2.15 × 10 5 and a slope rate of 435 dB/nm. These results show that compact air‐hole perturbation can tune high‐ Q asymmetric resonances in Ge‐OI mid‐IR photonics, where the useful high‐slope regime is determined by a balance among phase‐induced asymmetry, linewidth preservation, coupling condition, and local transmission contrast.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"21 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149208935","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

Skyrmions in Scalar Fields of Non‐Hermitian Optical Microcavities: Spontaneous Formation, Nonlinear Control, and Optical Forces 非厄米光学微腔标量场中的Skyrmions：自发形成、非线性控制和光力

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2026-10-09 DOI: 10.1002/nap2.70303

Jan Wingenbach,Roman Lebs,Xuekai Ma,Ewan M. Wright,Nai H. Kwong,Rolf Binder,Harald Giessen,Stefan Schumacher

{"title":"Skyrmions in Scalar Fields of Non‐Hermitian Optical Microcavities: Spontaneous Formation, Nonlinear Control, and Optical Forces","authors":"Jan Wingenbach,Roman Lebs,Xuekai Ma,Ewan M. Wright,Nai H. Kwong,Rolf Binder,Harald Giessen,Stefan Schumacher","doi":"10.1002/nap2.70303","DOIUrl":"https://doi.org/10.1002/nap2.70303","url":null,"abstract":"ABSTRACT Topological textures of light offer powerful routes to structure optical fields, control wave transport, and manipulate matter. Skyrmions, long studied as topological solitons in vector fields, have recently been extended to scalar wave systems, including acoustics, hydrodynamics, and plasmonics. However, their realization in two‐dimensional scalar wave propagation with nonlinearities and in quantum fluids remains uncharted. Here, we establish such a Skyrmion framework for scalar fields in optical microcavities. With a focus on exciton–polaritons, we show that nonresonant excitation without imposed phase can spontaneously generate isolated Skyrmions and self‐organized Skyrmion lattices in a polariton condensate. We trace this mechanism to gain‐ and loss‐induced phase curvature together with outward polariton flow. We further demonstrate that polariton nonlinearities provide all‐optical control of these topological textures, enabling switching of the Skyrmion number and reconfiguration of Skyrmion moiré lattices through resonant and nonresonant excitation schemes. These results establish nonlinear non‐Hermitian resonators as a versatile platform for the spontaneous generation and active control of scalar topological light fields.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"10 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149150418","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

Sparse-Aperture Quasi-Achromatic Spintronic Terahertz Emitter Enabled by Binary-Phase Metasurface and Multi-Spectral Intensity Optimization 基于二相超表面和多光谱强度优化的稀疏孔径准消色差自旋电子太赫兹发射器

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2026-10-08 DOI: 10.1002/nap2.70317

Wenkai Qiu,Yongshan Liu,Yunqing Jiang,Yong Xu,Sylvain Eimer,Xiaoqiang Zhang,Weisheng Zhao

引用次数: 0