Light, science & applications最新文献_第5页

Towards mixed physical node reservoir computing: light-emitting synaptic reservoir system with dual photoelectric output. 实现混合物理节点水库计算：具有双光电输出的发光突触水库系统。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-08-01 DOI: 10.1038/s41377-024-01516-z

Minrui Lian, Changsong Gao, Zhenyuan Lin, Liuting Shan, Cong Chen, Yi Zou, Enping Cheng, Changfei Liu, Tailiang Guo, Wei Chen, Huipeng Chen

{"title":"Towards mixed physical node reservoir computing: light-emitting synaptic reservoir system with dual photoelectric output.","authors":"Minrui Lian, Changsong Gao, Zhenyuan Lin, Liuting Shan, Cong Chen, Yi Zou, Enping Cheng, Changfei Liu, Tailiang Guo, Wei Chen, Huipeng Chen","doi":"10.1038/s41377-024-01516-z","DOIUrl":"10.1038/s41377-024-01516-z","url":null,"abstract":"Memristor-based physical reservoir computing holds significant potential for efficiently processing complex spatiotemporal data, which is crucial for advancing artificial intelligence. However, owing to the single physical node mapping characteristic of traditional memristor reservoir computing, it inevitably induces high repeatability of eigenvalues to a certain extent and significantly limits the efficiency and performance of memristor-based reservoir computing for complex tasks. Hence, this work firstly reports an artificial light-emitting synaptic (LES) device with dual photoelectric output for reservoir computing, and a reservoir system with mixed physical nodes is proposed. The system effectively transforms the input signal into two eigenvalue outputs using a mixed physical node reservoir comprising distinct physical quantities, namely optical output with nonlinear optical effects and electrical output with memory characteristics. Unlike previously reported memristor-based reservoir systems, which pursue rich reservoir states in one physical dimension, our mixed physical node reservoir system can obtain reservoir states in two physical dimensions with one input without increasing the number and types of devices. The recognition rate of the artificial light-emitting synaptic reservoir system can achieve 97.22% in MNIST recognition. Furthermore, the recognition task of multichannel images can be realized through the nonlinear mapping of the photoelectric dual reservoir, resulting in a recognition accuracy of 99.25%. The mixed physical node reservoir computing proposed in this work is promising for implementing the development of photoelectric mixed neural networks and material-algorithm collaborative design.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"13 1","pages":"179"},"PeriodicalIF":19.4,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11291830/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141860235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Anisotropic phonon dynamics in Dirac semimetal PtTe₂ thin films enabled by helicity-dependent ultrafast light excitation. 各向异性声子动力学在依赖螺旋的超快光激发的狄拉克半金属 PtTe2 薄膜中的实现。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-08-01 DOI: 10.1038/s41377-024-01540-z

Ziyang Li, Yequan Chen, Anke Song, Jinzhong Zhang, Rong Zhang, Zongzhi Zhang, Xuefeng Wang

{"title":"Anisotropic phonon dynamics in Dirac semimetal PtTe2 thin films enabled by helicity-dependent ultrafast light excitation.","authors":"Ziyang Li, Yequan Chen, Anke Song, Jinzhong Zhang, Rong Zhang, Zongzhi Zhang, Xuefeng Wang","doi":"10.1038/s41377-024-01540-z","DOIUrl":"10.1038/s41377-024-01540-z","url":null,"abstract":"Coherent phonons have aroused considerable attention in condensed matter physics owing to their extraordinary capacity of reflecting and controlling the physical properties of matter. However, the investigation on the interaction between coherent phonons and other microscopic particles on the ultrafast timescale within topological systems continues to be an active and unresolved area. Here, we show the energy transfer of coherent optical phonons (COP) in Dirac semimetal PtTe2 thin films using ultrafast optical pump-probe spectroscopy. Specifically, the helicity-dependent light-driven anisotropic COP signals disclose their direct connection with the light-excited anisotropic spin-polarized electrons via an angular momentum transfer. Furthermore, we observe the notable decreases in the COP oscillation frequency and the decay rate with increasing temperatures due to the anharmonic phonon-phonon scattering and electron-phonon scattering in the COP dissipation process, respectively. Our work paves the way for uncovering the coherent phonons in Dirac semimetals for the potential applications in optoelectronics and opto-spintronics.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"13 1","pages":"181"},"PeriodicalIF":19.4,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11294612/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141875273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vertically stacked skin-like active-matrix display with ultrahigh aperture ratio. 垂直堆叠的类肤质主动矩阵显示屏，具有超高光圈比。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-07-26 DOI: 10.1038/s41377-024-01524-z

Juntong Li, Yanping Ni, Xiaoli Zhao, Bin Wang, Chuang Xue, Zetong Bi, Cong Zhang, Yongjun Dong, Yanhong Tong, Qingxin Tang, Yichun Liu

{"title":"Vertically stacked skin-like active-matrix display with ultrahigh aperture ratio.","authors":"Juntong Li, Yanping Ni, Xiaoli Zhao, Bin Wang, Chuang Xue, Zetong Bi, Cong Zhang, Yongjun Dong, Yanhong Tong, Qingxin Tang, Yichun Liu","doi":"10.1038/s41377-024-01524-z","DOIUrl":"10.1038/s41377-024-01524-z","url":null,"abstract":"Vertically stacked all-organic active-matrix organic light-emitting diodes are promising candidates for high-quality skin-like displays due to their high aperture ratio, extreme mechanical flexibility, and low-temperature processing ability. However, these displays suffer from process interferences when interconnecting functional layers made of all-organic materials. To overcome this challenge, we present an innovative integration strategy called \"discrete preparation-multilayer lamination\" based on microelectronic processes. In this strategy, each functional layer was prepared separately on different substrates to avoid chemical and physical damage caused by process interferences. A single interconnect layer was introduced between each vertically stacked functional layer to ensure mechanical compatibility and interconnection. Compared to the previously reported layer-by-layer preparation method, the proposed method eliminates the need for tedious protection via barrier and pixel-defining layer processing steps. Additionally, based on active-matrix display, this strategy allows multiple pixels to collectively display a pattern of \"1\" with an aperture ratio of 83%. Moreover, the average mobility of full-photolithographic organic thin-film transistors was 1.04 cm2 V-1 s-1, ensuring stable and uniform displays. This strategy forms the basis for the construction of vertically stacked active-matrix displays, which should facilitate the commercial development of skin-like displays in wearable electronics.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"13 1","pages":"177"},"PeriodicalIF":19.4,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11282298/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141766477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Broadband nonreciprocal thermal emissivity and absorptivity. 宽带非互易热发射率和吸收率。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-07-24 DOI: 10.1038/s41377-024-01520-3

Komron J Shayegan, Jae S Hwang, Bo Zhao, Aaswath P Raman, Harry A Atwater

{"title":"Broadband nonreciprocal thermal emissivity and absorptivity.","authors":"Komron J Shayegan, Jae S Hwang, Bo Zhao, Aaswath P Raman, Harry A Atwater","doi":"10.1038/s41377-024-01520-3","DOIUrl":"10.1038/s41377-024-01520-3","url":null,"abstract":"A body that violates Kirchhoff's law of thermal radiation exhibits an inequality in its spectral directional absorptivity and emissivity. Achieving such an inequality is of fundamental interest as well as a prerequisite for achieving thermodynamic limits in photonic energy conversion1 and radiative cooling2. Thus far, inequalities in the spectral directional emissivity and absorptivity have been limited to narrow spectral resonances3, or wavelengths well beyond the infrared regime4. Bridging the gap from basic demonstrations to practical applications requires control over a broad spectral range of the unequal spectral directional absorptivity and emissivity. In this work, we demonstrate broadband nonreciprocal thermal emissivity and absorptivity by measuring the thermal emissivity and absorptivity of gradient epsilon-near-zero InAs layers of subwavelength thicknesses (50 nm and 150 nm) with an external magnetic field. The effect occurs in a spectral range (12.5-16 μm) that overlaps with the infrared transparency window and is observed at moderate (1 T) magnetic fields.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"13 1","pages":"176"},"PeriodicalIF":19.4,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11269630/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141759605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Arbitrarily rotating polarization direction and manipulating phases in linear and nonlinear ways using programmable metasurface. 利用可编程元表面任意旋转偏振方向，并以线性和非线性方式操纵相位。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-07-18 DOI: 10.1038/s41377-024-01513-2

Wei Liu, Si Ran Wang, Jun Yan Dai, Lei Zhang, Qiao Chen, Qiang Cheng, Tie Jun Cui

{"title":"Arbitrarily rotating polarization direction and manipulating phases in linear and nonlinear ways using programmable metasurface.","authors":"Wei Liu, Si Ran Wang, Jun Yan Dai, Lei Zhang, Qiao Chen, Qiang Cheng, Tie Jun Cui","doi":"10.1038/s41377-024-01513-2","DOIUrl":"10.1038/s41377-024-01513-2","url":null,"abstract":"Independent controls of various properties of electromagnetic (EM) waves are crucially required in a wide range of applications. Programmable metasurface is a promising candidate to provide an advanced platform for manipulating EM waves. Here, we propose an approach that can arbitrarily control the polarization direction and phases of reflected waves in linear and nonlinear ways using a stacked programmable metasurface. Further, we extend the space-time-coding theory to incorporate the dimension of polarization, which provides an extra degree of freedom for manipulating EM waves. As proof-of-principle application examples, we consider polarization rotation, phase manipulation, and beam steering at linear and nonlinear frequencies. For validation, we design, fabricate, and measure a metasurface sample. The experimental results show good agreement with theoretical predictions and simulations. The proposed approach has a wide range of applications in various areas, such as imaging, data storage, and wireless communication.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"13 1","pages":"172"},"PeriodicalIF":19.4,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11258343/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141723845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tunable single emitter-cavity coupling strength through waveguide-assisted energy quantum transfer. 通过波导辅助能量量子转移实现可调单发射器-腔耦合强度。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-07-18 DOI: 10.1038/s41377-024-01508-z

Yuan Liu, Hongwei Zhou, Linhan Lin, Hong-Bo Sun

{"title":"Tunable single emitter-cavity coupling strength through waveguide-assisted energy quantum transfer.","authors":"Yuan Liu, Hongwei Zhou, Linhan Lin, Hong-Bo Sun","doi":"10.1038/s41377-024-01508-z","DOIUrl":"10.1038/s41377-024-01508-z","url":null,"abstract":"The emitter-cavity strong coupling manifests crucial significance for exploiting quantum technology, especially in the scale of individual emitters. However, due to the small light-matter interaction cross-section, the single emitter-cavity strong coupling has been limited by its harsh requirement on the quality factor of the cavity and the local density of optical states. Herein, we present a strategy termed waveguide-assisted energy quantum transfer (WEQT) to improve the single emitter-cavity coupling strength by extending the interaction cross-section. Multiple ancillary emitters are optically linked by a waveguide, providing an indirect coupling channel to transfer the energy quantum between target emitter and cavity. An enhancement factor of coupling strength <math> <mrow> <mover><mrow><mi>g</mi></mrow> <mo>̃</mo></mover> <mo>/</mo> <mi>g</mi> <mo>></mo> <mn>10</mn></mrow> </math> can be easily achieved, which dramatically release the rigorous design of cavity. As an extension of concept, we further show that the ancillae can be used as controlling bits for a photon gate, opening up new degrees of freedom in quantum manipulation.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"13 1","pages":"171"},"PeriodicalIF":19.4,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11258325/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141723846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Broadband and fabrication-tolerant 3-dB couplers with topological valley edge modes. 具有拓扑谷边缘模式的宽带和制造容差 3-dB 耦合器。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-07-16 DOI: 10.1038/s41377-024-01512-3

Guo-Jing Tang, Xiao-Dong Chen, Lu Sun, Chao-Heng Guo, Meng-Yu Li, Zhong-Tao Tian, Hou-Hong Chen, Hong-Wei Wang, Qi-Yao Sun, Ying-Di Pan, Xin-Tao He, Yi-Kai Su, Jian-Wen Dong

{"title":"Broadband and fabrication-tolerant 3-dB couplers with topological valley edge modes.","authors":"Guo-Jing Tang, Xiao-Dong Chen, Lu Sun, Chao-Heng Guo, Meng-Yu Li, Zhong-Tao Tian, Hou-Hong Chen, Hong-Wei Wang, Qi-Yao Sun, Ying-Di Pan, Xin-Tao He, Yi-Kai Su, Jian-Wen Dong","doi":"10.1038/s41377-024-01512-3","DOIUrl":"10.1038/s41377-024-01512-3","url":null,"abstract":"3-dB couplers, which are commonly used in photonic integrated circuits for on-chip information processing, precision measurement, and quantum computing, face challenges in achieving robust performance due to their limited 3-dB bandwidths and sensitivity to fabrication errors. To address this, we introduce topological physics to nanophotonics, developing a framework for topological 3-dB couplers. These couplers exhibit broad working wavelength range and robustness against fabrication dimensional errors. By leveraging valley-Hall topology and mirror symmetry, the photonic-crystal-slab couplers achieve ideal 3-dB splitting characterized by a wavelength-insensitive scattering matrix. Tolerance analysis confirms the superiority on broad bandwidth of 48 nm and robust splitting against dimensional errors of 20 nm. We further propose a topological interferometer for on-chip distance measurement, which also exhibits robustness against dimensional errors. This extension of topological principles to the fields of interferometers, may open up new possibilities for constructing robust wavelength division multiplexing, temperature-drift-insensitive sensing, and optical coherence tomography applications.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"13 1","pages":"166"},"PeriodicalIF":19.4,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11250792/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141620366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Entangled photons enabled ultrafast stimulated Raman spectroscopy for molecular dynamics. 纠缠光子实现了用于分子动力学的超快受激拉曼光谱。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-07-15 DOI: 10.1038/s41377-024-01492-4

Jiahao Joel Fan, Zhe-Yu Ou, Zhedong Zhang

引用次数: 0

Single-shot probing of sub-picosecond solid-to-overdense-plasma dynamics. 亚皮秒固体-过密等离子体动力学的单次探测。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-07-11 DOI: 10.1038/s41377-024-01501-6

Kunjian Dai, Qingzhe Cui, Jinwei Zhang

引用次数: 0

Intelligent spectropolarimetry. 智能光谱测量法。