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Microcavity optomechanical magnetometry with picotesla-sensitivity
Light-Science & Applications Pub Date : 2025-02-20 DOI: 10.1038/s41377-025-01767-4
Zhaoyu Cai, Chengying Bao
{"title":"Microcavity optomechanical magnetometry with picotesla-sensitivity","authors":"Zhaoyu Cai, Chengying Bao","doi":"10.1038/s41377-025-01767-4","DOIUrl":"https://doi.org/10.1038/s41377-025-01767-4","url":null,"abstract":"<p>A new microcavity magnetometry with FeGaB thin film achieves 1.68 pT/Hz<sup>1/2</sup> sensitivity, which is two orders of magnitude improvement over previous work. Corona current detection has been demonstrated using this magnetometer.</p>","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143451499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Innovations in bulk photovoltaics: design strategies for boosted photocurrent
Light-Science & Applications Pub Date : 2025-02-20 DOI: 10.1038/s41377-025-01764-7
Akhil Sreevalsan, Hyosung Choi
{"title":"Innovations in bulk photovoltaics: design strategies for boosted photocurrent","authors":"Akhil Sreevalsan, Hyosung Choi","doi":"10.1038/s41377-025-01764-7","DOIUrl":"https://doi.org/10.1038/s41377-025-01764-7","url":null,"abstract":"<p>The limitations imposed by low contact resistance, restricted polarization access, and tensile strain in bulk photovoltaic systems were mitigated by the engineering and optimization of edge semimetal contacts using Bi/Au. Improved bulk PV photocurrent and intriguing prospective applications are made possible by this effort.</p>","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"81 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143451498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dispersive optical activity for spectro-polarimetric imaging
Light-Science & Applications Pub Date : 2025-02-20 DOI: 10.1038/s41377-025-01766-5
Zhijie Cao, Siwei Sun, Jingxuan Wei, Yong Liu
{"title":"Dispersive optical activity for spectro-polarimetric imaging","authors":"Zhijie Cao, Siwei Sun, Jingxuan Wei, Yong Liu","doi":"10.1038/s41377-025-01766-5","DOIUrl":"https://doi.org/10.1038/s41377-025-01766-5","url":null,"abstract":"<p>A spectro-polarimetric imaging approach leverages optical rotatory dispersion in natural crystals to encode spectral information into polarization states. The system demonstrates effectiveness in laboratory and outdoor field experiments, showing potential for biological microscopy, machine vision, and remote sensing applications.</p>","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143452102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
“QuanTour” illuminates Europe with single photons: celebrating the International Year of Quantum Science and Technology 2025 "量子之旅 "用单光子照亮欧洲：庆祝 2025 国际量子科技年
Light-Science & Applications Pub Date : 2025-02-17 DOI: 10.1038/s41377-025-01745-w
Fei Ding
{"title":"“QuanTour” illuminates Europe with single photons: celebrating the International Year of Quantum Science and Technology 2025","authors":"Fei Ding","doi":"10.1038/s41377-025-01745-w","DOIUrl":"https://doi.org/10.1038/s41377-025-01745-w","url":null,"abstract":"<p>Witness the journey of a solid-state quantum light source travelling across Europe and beyond—like an Olympic torch relay in the quantum realm.</p>","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"88 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143426976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Compact and reciprocal probe-signal-integrated rotational Doppler velocimetry with fiber-sculpted light
Light-Science & Applications Pub Date : 2025-02-17 DOI: 10.1038/s41377-025-01747-8
Zhenyu Wan, Ziyi Tang, Xi Zhang, Miles J. Padgett, Jian Wang
{"title":"Compact and reciprocal probe-signal-integrated rotational Doppler velocimetry with fiber-sculpted light","authors":"Zhenyu Wan, Ziyi Tang, Xi Zhang, Miles J. Padgett, Jian Wang","doi":"10.1038/s41377-025-01747-8","DOIUrl":"https://doi.org/10.1038/s41377-025-01747-8","url":null,"abstract":"<p>In recent years, with the clarification of the mechanism of the rotational Doppler effect (RDE), there has attracted extensive attention to its development of applications, especially in the detection of the angular velocity of rotating objects. On the other hand, optical fiber technology is widely applied in laser velocimetry from beam delivery to scattered light collection, aiding the miniaturization of instruments. Here we report the first all-fiber rotational Doppler velocimetry (AF-RDV) with a single probe based on a fabricated mode-sculpted fiber-optic element. The constructed AF-RDV can be operated in two reciprocal schemes wherein exchanging the illuminating mode and detected mode. Using this, we experimentally demonstrate the mode-changing dependent nature of the RDE. Particularly, the results suggest that the rotational Doppler shift can be observed by mode-filtering the scattered signal even with a non-twisted probe light. We also show the achromatic property of the RDE by scanning the incident wavelength, enabling the AF-RDV within an ultra-broadband operation range. The AF-RDV exhibits favorable performance for detecting spinning rough surfaces. It may provide an exciting new practical sensing instrument with significant prospects for monitoring angular motion in both research and industry.</p>","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143434993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A hybrid single quantum dot coupled cavity on a CMOS-compatible SiC photonic chip for Purcell-enhanced deterministic single-photon emission
Light-Science & Applications Pub Date : 2025-02-14 DOI: 10.1038/s41377-024-01676-y
Yifan Zhu, Runze Liu, Ailun Yi, Xudong Wang, Yuanhao Qin, Zihao Zhao, Junyi Zhao, Bowen Chen, Xiuqi Zhang, Sannian Song, Yongheng Huo, Xin Ou, Jiaxiang Zhang
{"title":"A hybrid single quantum dot coupled cavity on a CMOS-compatible SiC photonic chip for Purcell-enhanced deterministic single-photon emission","authors":"Yifan Zhu, Runze Liu, Ailun Yi, Xudong Wang, Yuanhao Qin, Zihao Zhao, Junyi Zhao, Bowen Chen, Xiuqi Zhang, Sannian Song, Yongheng Huo, Xin Ou, Jiaxiang Zhang","doi":"10.1038/s41377-024-01676-y","DOIUrl":"https://doi.org/10.1038/s41377-024-01676-y","url":null,"abstract":"<p>The ability to control nonclassical light emission from a single quantum emitter by an integrated cavity may unleash new perspectives for integrated photonic quantum applications. However, coupling a single quantum emitter to cavity within photonic circuitry towards creation of the Purcell-enhanced single-photon emission is elusive due to the complexity of integrating active devices in low-loss photonic circuits. Here we demonstrate a hybrid micro-ring resonator (HMRR) coupled with self-assembled quantum dots (QDs) for cavity-enhanced deterministic single-photon emission. The HMRR cavity supports whispering-gallery modes with quality factors up to 7.8×10<sup>3</sup>. By further introducing a micro-heater, we show that the photon emission of QDs can be locally and dynamically tuned over one free spectral ranges of the HMRR ( ~ 4 nm). This allows precise tuning of individual QDs in resonance with the cavity modes, thereby enhancing single-photon emission with a Purcell factor of about 4.9. Our results on the hybrid integrated cavities coupled with two-level quantum emitters emerge as promising devices for chip-based scalable photonic quantum applications.</p>","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143417479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Keeping them distant for ultimate brightness
Light-Science & Applications Pub Date : 2025-02-13 DOI: 10.1038/s41377-025-01760-x
Maximilian Stremel, Markus Suta
{"title":"Keeping them distant for ultimate brightness","authors":"Maximilian Stremel, Markus Suta","doi":"10.1038/s41377-025-01760-x","DOIUrl":"https://doi.org/10.1038/s41377-025-01760-x","url":null,"abstract":"<p>While strong absorption is best achieved with high activator concentrations, luminescence brightness typically suffers in that case due to energy migration and concentration quenching. The teams around Xia and Zhong have reported about an aphthitalite-type Eu-activated phosphate that breaks with this paradigm and enables the sustainment of high photoluminescence quantum yields (&gt;40%) up to concentrations as high as 70 mol% Eu. Mixing of that phosphor with a low (0.8%) and high (70%) Eu fraction results in almost natural white light with excellent color rendition and correlated color temperature that could serve as a new instructive concept for next-generation phosphor-converted white LEDs.</p>","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143401289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Colour triad in rare-earth doped glass: a step toward volumetric displays
Light-Science & Applications Pub Date : 2025-02-13 DOI: 10.1038/s41377-025-01763-8
Yiyuan Zhu, Renren Deng
{"title":"Colour triad in rare-earth doped glass: a step toward volumetric displays","authors":"Yiyuan Zhu, Renren Deng","doi":"10.1038/s41377-025-01763-8","DOIUrl":"https://doi.org/10.1038/s41377-025-01763-8","url":null,"abstract":"<p>Full-colour tuning in rare-earth doped monolithic tellurite glass is realised via excitation pulse modulation, enabling a novel platform for laser-based transparent displays. This advancement demonstrates the potential of upconversion emission for future display technologies.</p>","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143401288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Universal conservation laws of the wave-particle-entanglement triad: theory and experiment
Light-Science & Applications Pub Date : 2025-02-12 DOI: 10.1038/s41377-025-01759-4
Ziheng Ding, Yaohao Deng, Shao-Ming Fei, Si-Qi Zhou, Xiaojiong Chen, Ziwen Rui, Zhihao Ma, Yunlong Xiao, Jianwei Wang
{"title":"Universal conservation laws of the wave-particle-entanglement triad: theory and experiment","authors":"Ziheng Ding, Yaohao Deng, Shao-Ming Fei, Si-Qi Zhou, Xiaojiong Chen, Ziwen Rui, Zhihao Ma, Yunlong Xiao, Jianwei Wang","doi":"10.1038/s41377-025-01759-4","DOIUrl":"https://doi.org/10.1038/s41377-025-01759-4","url":null,"abstract":"<p>When observed, a quantum system exhibits either wave-like or particle-like properties, depending on how it is measured. However, this duality is affected by the entanglement of the system with its quantum memory, raising a fundamental question: how are wave–particle duality and entanglement related? Here, we broaden the scope of wave–particle duality to include entanglement, introduce universal conservation laws for the wave–particle–entanglement triad, and perform demonstrations on silicon–integrated nanophotonic quantum chips. Our experiments not only mark the first confirmation of universal conservation laws but also highlight the potential of integrated photonics for exploring complex quantum phenomena in high-dimensional systems.</p>","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143393168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Experimental benchmarking of quantum state overlap estimation strategies with photonic systems
Light-Science & Applications Pub Date : 2025-02-12 DOI: 10.1038/s41377-025-01755-8
Hao Zhan, Ben Wang, Minghao Mi, Jie Xie, Liang Xu, Aonan Zhang, Lijian Zhang
{"title":"Experimental benchmarking of quantum state overlap estimation strategies with photonic systems","authors":"Hao Zhan, Ben Wang, Minghao Mi, Jie Xie, Liang Xu, Aonan Zhang, Lijian Zhang","doi":"10.1038/s41377-025-01755-8","DOIUrl":"https://doi.org/10.1038/s41377-025-01755-8","url":null,"abstract":"<p>Accurately estimating the overlap between quantum states is a fundamental task in quantum information processing. While various strategies using distinct quantum measurements have been proposed for overlap estimation, the lack of experimental benchmarks on estimation precision limits strategy selection in different situations. Here we compare the performance of four practical strategies for overlap estimation, including tomography-tomography, tomography-projection, Schur collective measurement and optical swap test using photonic quantum systems. We encode the quantum states on the polarization and path degrees of freedom of single photons. The corresponding measurements are performed by photon detection on certain modes following single-photon mode transformation or two-photon interference. We further propose an adaptive strategy with optimized precision in full-range overlap estimation. Our results shed new light on extracting the parameter of interest from quantum systems, prompting the design of efficient quantum protocols.</p>","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143393169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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