Light, science & applications最新文献_第9页

Complex-frequency waves: beat loss and win sensitivity. 复频波：节拍损失和赢敏感性。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-02-01 DOI: 10.1038/s41377-024-01388-3

Qingqing Cheng, Tao Li

引用次数: 0

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-01-31 DOI: 10.1038/s41377-024-01376-7

Yifan Sun, Qian Li, Ling-Jun Kong, Xiangdong Zhang

{"title":"Correlated optical convolutional neural network with \"quantum speedup\".","authors":"Yifan Sun, Qian Li, Ling-Jun Kong, Xiangdong Zhang","doi":"10.1038/s41377-024-01376-7","DOIUrl":"10.1038/s41377-024-01376-7","url":null,"abstract":"Compared with electrical neural networks, optical neural networks (ONNs) have the potentials to break the limit of the bandwidth and reduce the consumption of energy, and therefore draw much attention in recent years. By far, several types of ONNs have been implemented. However, the current ONNs cannot realize the acceleration as powerful as that indicated by the models like quantum neural networks. How to construct and realize an ONN with the quantum speedup is a huge challenge. Here, we propose theoretically and demonstrate experimentally a new type of optical convolutional neural network by introducing the optical correlation. It is called the correlated optical convolutional neural network (COCNN). We show that the COCNN can exhibit \"quantum speedup\" in the training process. The character is verified from the two aspects. One is the direct illustration of the faster convergence by comparing the loss function curves of the COCNN with that of the traditional convolutional neural network (CNN). Such a result is compatible with the training performance of the recently proposed quantum convolutional neural network (QCNN). The other is the demonstration of the COCNN's capability to perform the QCNN phase recognition circuit, validating the connection between the COCNN and the QCNN. Furthermore, we take the COCNN analog to the 3-qubit QCNN phase recognition circuit as an example and perform an experiment to show the soundness and the feasibility of it. The results perfectly match the theoretical calculations. Our proposal opens up a new avenue for realizing the ONNs with the quantum speedup, which will benefit the information processing in the era of big data.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"13 1","pages":"36"},"PeriodicalIF":19.4,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10828439/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139642515","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

A new route towards polarized luminescence: 0D/2D nanocomposites. 实现极化发光的新途径：0D/2D 纳米复合材料。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-01-31 DOI: 10.1038/s41377-023-01370-5

Andries Meijerink

引用次数: 0

Observation of transition from superfluorescence to polariton condensation in CsPbBr₃ quantum dots film. 观测 CsPbBr3 量子点薄膜从超荧光到极化子凝聚的转变。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-01-30 DOI: 10.1038/s41377-024-01378-5

Danqun Mao, Linqi Chen, Zheng Sun, Min Zhang, Zhe-Yu Shi, Yongsheng Hu, Long Zhang, Jian Wu, Hongxing Dong, Wei Xie, Hongxing Xu

{"title":"Observation of transition from superfluorescence to polariton condensation in CsPbBr3 quantum dots film.","authors":"Danqun Mao, Linqi Chen, Zheng Sun, Min Zhang, Zhe-Yu Shi, Yongsheng Hu, Long Zhang, Jian Wu, Hongxing Dong, Wei Xie, Hongxing Xu","doi":"10.1038/s41377-024-01378-5","DOIUrl":"10.1038/s41377-024-01378-5","url":null,"abstract":"The superfluorescence effect has received extensive attention due to the many-body physics of quantum correlation in dipole gas and the optical applications of ultrafast bright radiation field based on the cooperative quantum state. Here, we demonstrate not only to observe the superfluorescence effect but also to control the cooperative state of the excitons ensemble by externally applying a regulatory dimension of coupling light fields. A new quasi-particle called cooperative exciton-polariton is revealed in a light-matter hybrid structure of a perovskite quantum dot thin film spin-coated on a Distributed Bragg Reflector. Above the nonlinear threshold, polaritonic condensation occurs at a nonzero momentum state on the lower polariton branch owning to the vital role of the synchronized excitons. The phase transition from superfluorescence to polariton condensation exhibits typical signatures of a decrease of the linewidth, an increase of the macroscopic coherence as well as an accelerated radiation decay rate. These findings are promising for opening new potential applications for super-brightness and unconventional coherent light sources and could enable the exploitation of cooperative effects for quantum optics.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"13 1","pages":"34"},"PeriodicalIF":19.4,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10828401/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139642516","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

Vectorial adaptive optics: expanding the frontiers of optical correction. 矢量自适应光学：拓展光学校正的前沿。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-01-30 DOI: 10.1038/s41377-023-01358-1

Qiming Zhang, Min Gu

引用次数: 0

Radiative loss of coherence in free electrons: a long-range quantum phenomenon. 自由电子相干性的辐射损失：一种长程量子现象。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-01-26 DOI: 10.1038/s41377-023-01361-6

Cruz I Velasco, Valerio Di Giulio, F Javier García de Abajo

{"title":"Radiative loss of coherence in free electrons: a long-range quantum phenomenon.","authors":"Cruz I Velasco, Valerio Di Giulio, F Javier García de Abajo","doi":"10.1038/s41377-023-01361-6","DOIUrl":"10.1038/s41377-023-01361-6","url":null,"abstract":"Quantum physics rules the dynamics of small objects as they interact over microscopic length scales. Nevertheless, quantum correlations involving macroscopic distances can be observed between entangled photons as well as in atomic gases and matter waves at low temperatures. The long-range nature of the electromagnetic coupling between charged particles and extended objects could also trigger quantum phenomena over large distances. Here, we reveal a manifestation of quantum mechanics that involves macroscopic distances and results in a nearly complete depletion of coherence associated with which-way free-electron interference produced by electron-radiation coupling in the presence of distant extended objects. This is a ubiquitous effect that we illustrate through a rigorous theoretical analysis of a two-path electron beam interacting with a semi-infinite metallic plate and find the inter-path coherence to vanish proportionally to the path separation at zero temperature and exponentially at finite temperature. The investigated regime of large distances originates in the coupling of the electron to radiative modes assisted by diffraction at material structures but without any involvement of material excitations. Besides the fundamental interest of this macroscopic quantum phenomenon, our results suggest an approach to measuring the vacuum temperature and nondestructively sensing the presence of distant objects.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"13 1","pages":"31"},"PeriodicalIF":19.4,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10810897/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139564335","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

Spatio-temporal coupled mode theory for nonlocal metasurfaces. 非局部元曲面的时空耦合模式理论

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-01-24 DOI: 10.1038/s41377-023-01350-9

Adam Overvig, Sander A Mann, Andrea Alù

{"title":"Spatio-temporal coupled mode theory for nonlocal metasurfaces.","authors":"Adam Overvig, Sander A Mann, Andrea Alù","doi":"10.1038/s41377-023-01350-9","DOIUrl":"10.1038/s41377-023-01350-9","url":null,"abstract":"Diffractive nonlocal metasurfaces have recently opened a broad range of exciting developments in nanophotonics research and applications, leveraging spatially extended-yet locally patterned-resonant modes to control light with new degrees of freedom. While conventional grating responses are elegantly captured by temporal coupled mode theory, current approaches are not well equipped to capture the arbitrary spatial response observed in the nascent field of nonlocal metasurfaces. Here, we introduce spatio-temporal coupled mode theory (STCMT), capable of elegantly capturing the key features of the resonant response of wavefront-shaping nonlocal metasurfaces. This framework can quantitatively guide nonlocal metasurface design while maintaining compatibility with local metasurface frameworks, making it a powerful tool to rationally design and optimize a broad class of ultrathin optical components. We validate this STCMT framework against full-wave simulations of various nonlocal metasurfaces, demonstrating that this tool offers a powerful semi-analytical framework to understand and model the physics and functionality of these devices, without the need for computationally intense full-wave simulations. We also discuss how this model may shed physical insights into nonlocal phenomena in photonics and the functionality of the resulting devices. As a relevant example, we showcase STCMT's flexibility by applying it to study and rapidly prototype nonlocal metasurfaces that spatially shape thermal emission.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"13 1","pages":"28"},"PeriodicalIF":19.4,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11251021/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139542182","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

Geometric phase-encoded stimuli-responsive cholesteric liquid crystals for visualizing real-time remote monitoring: humidity sensing as a proof of concept. 用于可视化实时远程监控的几何相位编码刺激响应胆甾型液晶：湿度传感概念验证。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-01-24 DOI: 10.1038/s41377-023-01360-7

Shi-Long Li, Zhao-Yi Chen, Peng Chen, Wei Hu, Chaohong Huang, Sen-Sen Li, Xuejia Hu, Yan-Qing Lu, Lu-Jian Chen

{"title":"Geometric phase-encoded stimuli-responsive cholesteric liquid crystals for visualizing real-time remote monitoring: humidity sensing as a proof of concept.","authors":"Shi-Long Li, Zhao-Yi Chen, Peng Chen, Wei Hu, Chaohong Huang, Sen-Sen Li, Xuejia Hu, Yan-Qing Lu, Lu-Jian Chen","doi":"10.1038/s41377-023-01360-7","DOIUrl":"10.1038/s41377-023-01360-7","url":null,"abstract":"Liquid crystals are a vital component of modern photonics, and recent studies have demonstrated the exceptional sensing properties of stimuli-responsive cholesteric liquid crystals. However, existing cholesteric liquid crystal-based sensors often rely on the naked eye perceptibility of structural color or the measurement of wavelength changes by spectrometric tools, which limits their practical applications. Therefore, developing a platform that produces recognizable sensing signals is critical. In this study, we present a visual sensing platform based on geometric phase encoding of stimuli-responsive cholesteric liquid crystal polymers that generates real-time visual patterns, rather than frequency changes. To demonstrate this platform's effectiveness, we used a humidity-responsive cholesteric liquid crystal polymer film encoded with a q-plate pattern, which revealed that humidity causes a shape change in the vortex beam reflected from the encoded cholesteric liquid crystal polymers. Moreover, we developed a prototype platform towards remote humidity monitoring benefiting from the high directionality and long-range transmission properties of laser beams carrying orbital angular momentum. Our approach provides a novel sensing platform for cholesteric liquid crystals-based sensors that offers promising practical applications. The ability to generate recognizable sensing signals through visual patterns offers a new level of practicality in the sensing field with stimuli-responsive cholesteric liquid crystals. This platform might have significant implications for a broad readership and will be of interest to researchers working in the field of photonics and sensing technology.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"13 1","pages":"27"},"PeriodicalIF":19.4,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10805905/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139542124","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

Operando monitoring of dendrite formation in lithium metal batteries via ultrasensitive tilted fiber Bragg grating sensors. 通过超灵敏倾斜光纤布拉格光栅传感器对锂金属电池中树枝状晶粒的形成进行操作性监测。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-01-22 DOI: 10.1038/s41377-023-01346-5

Xile Han, Hai Zhong, Kaiwei Li, Xiaobin Xue, Wen Wu, Nan Hu, Xihong Lu, Jiaqiang Huang, Gaozhi Xiao, Yaohua Mai, Tuan Guo

{"title":"Operando monitoring of dendrite formation in lithium metal batteries via ultrasensitive tilted fiber Bragg grating sensors.","authors":"Xile Han, Hai Zhong, Kaiwei Li, Xiaobin Xue, Wen Wu, Nan Hu, Xihong Lu, Jiaqiang Huang, Gaozhi Xiao, Yaohua Mai, Tuan Guo","doi":"10.1038/s41377-023-01346-5","DOIUrl":"10.1038/s41377-023-01346-5","url":null,"abstract":"Lithium (Li) dendrite growth significantly deteriorates the performance and shortens the operation life of lithium metal batteries. Capturing the intricate dynamics of surface localized and rapid mass transport at the electrolyte-electrode interface of lithium metal is essential for the understanding of the dendrite growth process, and the evaluation of the solutions mitigating the dendrite growth issue. Here we demonstrate an approach based on an ultrasensitive tilted fiber Bragg grating (TFBG) sensor which is inserted close to the electrode surface in a working lithium metal battery, without disturbing its operation. Thanks to the superfine optical resonances of the TFBG, in situ and rapid monitoring of mass transport kinetics and lithium dendrite growth at the nanoscale interface of lithium anodes have been achieved. Reliable correlations between the performance of different natural/artificial solid electrolyte interphases (SEIs) and the time-resolved optical responses have been observed and quantified, enabling us to link the nanoscale ion and SEI behavior with the macroscopic battery performance. This new operando tool will provide additional capabilities for parametrization of the batteries' electrochemistry and help identify the optimal interphases of lithium metal batteries to enhance battery performance and its safety.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"13 1","pages":"24"},"PeriodicalIF":19.4,"publicationDate":"2024-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10803745/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139521283","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

Tantalum pentoxide: a new material platform for high-performance dielectric metasurface optics in the ultraviolet and visible region. 五氧化钽：紫外线和可见光区域高性能介电元表面光学的新材料平台。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-01-22 DOI: 10.1038/s41377-023-01330-z

Cheng Zhang, Lu Chen, Zhelin Lin, Junyeob Song, Danyan Wang, Moxin Li, Okan Koksal, Zi Wang, Grisha Spektor, David Carlson, Henri J Lezec, Wenqi Zhu, Scott Papp, Amit Agrawal

{"title":"Tantalum pentoxide: a new material platform for high-performance dielectric metasurface optics in the ultraviolet and visible region.","authors":"Cheng Zhang, Lu Chen, Zhelin Lin, Junyeob Song, Danyan Wang, Moxin Li, Okan Koksal, Zi Wang, Grisha Spektor, David Carlson, Henri J Lezec, Wenqi Zhu, Scott Papp, Amit Agrawal","doi":"10.1038/s41377-023-01330-z","DOIUrl":"10.1038/s41377-023-01330-z","url":null,"abstract":"Dielectric metasurfaces, composed of planar arrays of subwavelength dielectric structures that collectively mimic the operation of conventional bulk optical elements, have revolutionized the field of optics by their potential in constructing high-efficiency and multi-functional optoelectronic systems on chip. The performance of a dielectric metasurface is largely determined by its constituent material, which is highly desired to have a high refractive index, low optical loss and wide bandgap, and at the same time, be fabrication friendly. Here, we present a new material platform based on tantalum pentoxide (Ta2O5) for implementing high-performance dielectric metasurface optics over the ultraviolet and visible spectral region. This wide-bandgap dielectric, exhibiting a high refractive index exceeding 2.1 and negligible extinction coefficient across a broad spectrum, can be easily deposited over large areas with good quality using straightforward physical vapor deposition, and patterned into high-aspect-ratio subwavelength nanostructures through commonly-available fluorine-gas-based reactive ion etching. We implement a series of high-efficiency ultraviolet and visible metasurfaces with representative light-field modulation functionalities including polarization-independent high-numerical-aperture lensing, spin-selective hologram projection, and vivid structural color generation, and the devices exhibit operational efficiencies up to 80%. Our work overcomes limitations faced by scalability of commonly-employed metasurface dielectrics and their operation into the visible and ultraviolet spectral range, and provides a novel route towards realization of high-performance, robust and foundry-manufacturable metasurface optics.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"13 1","pages":"23"},"PeriodicalIF":19.4,"publicationDate":"2024-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10800353/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139513243","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