{"title":"Mapping blood vessels and oxygenation throughout the whole mouse brain with dual-frequency fiber-array photoacoustic computed tomography.","authors":"Gen Mu, Yanyu Zhao","doi":"10.1038/s41377-026-02440-0","DOIUrl":"https://doi.org/10.1038/s41377-026-02440-0","url":null,"abstract":"<p><p>A new all‑optical photoacoustic tomography system captures both low‑ and high‑frequency photoacoustic signals using an arc‑shaped fiber array. The high‑frequency channel resolves cortical vessels as fine as 70 μm near the surface; the low‑frequency channel reaches 1.2 cm to image the entire mouse brain. With ultrahigh sensitivity and blood oxygen saturation mapping, this dual‑frequency design alleviates the classic trade‑off between resolution and penetration-offering high‑resolution surface imaging and deep, wide‑field coverage within a single imaging platform.</p>","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"15 1","pages":""},"PeriodicalIF":23.4,"publicationDate":"2026-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13487153/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148795154","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}
Pengtao Luo, Fengyi Chen, Tuan Guo, Xueguang Qiao, Ruohui Wang
{"title":"Single-fiber three-dimensional shape sensing via femtosecond laser inscribed orthogonal eccentric scatterers.","authors":"Pengtao Luo, Fengyi Chen, Tuan Guo, Xueguang Qiao, Ruohui Wang","doi":"10.1038/s41377-026-02425-z","DOIUrl":"10.1038/s41377-026-02425-z","url":null,"abstract":"<p><p>Optical fiber sensors have emerged as a powerful platform for high-precision shape detection in soft robotics and minimally invasive medical devices. However, existing fiber-sensing architectures face a long-standing trade-off between device size and spatial resolution. This work reports a miniaturized three-dimensional shape-sensing system based on misplaced orthogonal eccentric scatterers (MOESs) densely inscribed into the cladding of a standard single-mode fiber. The MOESs array is fabricated through a scalable reel-to-reel femtosecond laser writing process. Each MOES element functions as a curvature-dependent Rayleigh scatterer, and their misplaced orthogonal arrangement spatially encodes full 3D deformation information within a single fiber core. Experimental results demonstrate high-fidelity 2D bending and full 3D deformation reconstruction. The intensity-domain reconstruction algorithm further exhibits strong immunity to environmental perturbations. This approach defines a new paradigm for compact, cost-effective, and high-fidelity fiber sensors, paving the way for applications in unstructured and dynamic environments.</p>","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"15 1","pages":""},"PeriodicalIF":23.4,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13454164/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148701839","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}
{"title":"Qudit W and Greenberger-Horne-Zeilinger states on a two-photon chip.","authors":"Yulin Chi, Haiyu Ding, Fei Wang, Chengkang Pan, Chunju Shao","doi":"10.1038/s41377-026-02285-7","DOIUrl":"10.1038/s41377-026-02285-7","url":null,"abstract":"<p><p>High-dimensional quantum entangled states exhibit unique properties. While generalizations like qudit Bell, Greenberger-Horne-Zeilinger (GHZ), and Cluster states have been studied, the qudit W states remain underexplored. We discover that a superposition of qudit Dicke states can serve as high-dimensional generalizations of W states, demonstrating their enhanced robustness against qudit loss, and present linearly scalable quantum circuits for their generation. Using a programmable silicon-photonic entanglement generator, we first theoretically and experimentally demonstrate the generation of 3-ququart GHZ and W states using two photons and one ancillary ququart, with fidelities of 0.932 ± 0.009 and 0.901 ± 0.012, respectively. Genuine multipartite entanglement of the GHZ state and the improved resilience of the W state are confirmed. Our findings provide new insights and efficient approaches for qudit-based quantum science and technologies.</p>","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"15 1","pages":""},"PeriodicalIF":23.4,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13443087/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148679048","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}
Shiyun Zhou, Lang Li, Jinyu Yang, Shurui Zhang, Zhiyuan Zhou, Chunqing Gao, Shiyao Fu
{"title":"Hybrid intelligent strategy driving high-dimensional encrypted orbital angular momentum comb multicasting towards optical data-transmission networks.","authors":"Shiyun Zhou, Lang Li, Jinyu Yang, Shurui Zhang, Zhiyuan Zhou, Chunqing Gao, Shiyao Fu","doi":"10.1038/s41377-026-02386-3","DOIUrl":"10.1038/s41377-026-02386-3","url":null,"abstract":"<p><p>Achieving higher degrees and dimensions of light is one of the accessible paths for increasing the capacity of optical data-transmission systems. Orbital angular momentum (OAM), owing to its infinite and mutually orthogonal nature, offers a promising carrier for high-capacity and high-dimensional data transmission. However, current OAM-based shift keying and multicasting schemes predominantly rely on single-mode encoding or simple mode complexing, which fails to fully exploit the high-dimensional potential of OAM. This limitation primarily arises from the challenge of directly modulating complex multiplexed OAM states-such as OAM combs-which typically requires bulky optical setups and complicated iteration algorithms. Here, a hybrid intelligent strategy for high-dimensional OAM comb multicasting is demonstrated, enabling simultaneous multi-channel transmission with high-dimensional OAM encoding using a single phase-only hologram. By jointly AI-driven OAM comb generation and physics-guided wave-vector manipulation, a phase-only modulation framework is developed to directly tailor multiple structured OAM combs in a single modulation step, significantly improving the photon efficiency of OAM shift keying. The scalability and fidelity of the proposed approach are experimentally validated through 4, 6, and 8-channel multicasting demonstrations. Furthermore, a mixed encoding protocol is introduced to enhance transmission security in one-to-many multicasting scenarios, enabling parallel delivery of distinct image contents to different users. A six-channel OAM comb communication system achieves real-time transmission with a bit-error rate below 7 × 10⁻⁵. Our proposal offers a compact and scalable solution for high-dimensional OAM-based data transmission and provides a promising pathway toward next-generation large-capacity optical networks.</p>","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"15 1","pages":""},"PeriodicalIF":23.4,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13443203/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148679053","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}
Lingsen You, Jiaxin Yao, Yaoqing Qiu, Yu Wang, Yunlu Sun, Rongjun Zhang, Li Shen, Junbo Ge
{"title":"From intravascular imaging to adaptive vascular care: intelligent photonics and digital twins in panvascular disease.","authors":"Lingsen You, Jiaxin Yao, Yaoqing Qiu, Yu Wang, Yunlu Sun, Rongjun Zhang, Li Shen, Junbo Ge","doi":"10.1038/s41377-026-02410-6","DOIUrl":"10.1038/s41377-026-02410-6","url":null,"abstract":"<p><p>Panvascular diseases (PVDs) stand as the leading cause of global mortality, necessitating a paradigm shift from local anatomical repair to the systemic restoration of vascular homeostasis. While intravascular optical imaging has revolutionized diagnosis, it remains a passive observation tool, restricted by \"physical bottlenecks\" in resolution and \"cognitive bottlenecks\" in interpretation. To address these challenges, we frame our analysis around \"Suitcordance\", a concept aiming to capture the dynamic state of matching between interventional devices and the vascular microenvironment. In this review, we use Suitcordance as a working analytical framework to represent such a clinically-targeted, integrated perspective, and to organize the evidence on intravascular optical imaging and its integration with artificial intelligence. First, we summarize recent advances in intravascular imaging modalities, including micro-OCT, hybrid systems, and emerging detection technologies. Second, we review how AI-based image analysis and image-derived digital twin models are being applied to interpret these data and to support procedural decision-making. On this basis, we discuss how such tools may contribute to a more individualized assessment of device-vessel matching in panvascular disease.</p>","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"15 1","pages":""},"PeriodicalIF":23.4,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13433788/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148669954","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}
Cruz I Velasco, Valerio Di Giulio, F Javier García de Abajo
{"title":"Correction: 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/s41377-026-02376-5","DOIUrl":"10.1038/s41377-026-02376-5","url":null,"abstract":"","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"15 1","pages":""},"PeriodicalIF":23.4,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13434814/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148669997","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}
Yan Li, Stefano Vezzoli, Tim Klee, Joseph J Broughton, Romain Tirole, Anthony C Harwood, Hortense Allegre, Simon A R Horsley, Riccardo Sapienza, John B Pendry, John W G Tisch
{"title":"Ultrafast switching of optical properties in a doped semiconductor by intense femtosecond laser pulses.","authors":"Yan Li, Stefano Vezzoli, Tim Klee, Joseph J Broughton, Romain Tirole, Anthony C Harwood, Hortense Allegre, Simon A R Horsley, Riccardo Sapienza, John B Pendry, John W G Tisch","doi":"10.1038/s41377-026-02346-x","DOIUrl":"10.1038/s41377-026-02346-x","url":null,"abstract":"<p><p>The rapid switching of materials when excited by ultrashort pulses of light is central for many optical technologies, and in particular to the developing field of time-varying metamaterials. These out-of-equilibrium interactions are difficult to capture with traditional theoretical models. Here we combine experiments and theory to unravel different regimes of interactions and a response saturation for a 44 fs, near-infrared pump pulse exciting a switchable doped semiconductor indium tin oxide thin film target. We model this process as a change in plasma frequency due to the excitation of hot electrons in a non-parabolic conduction band, which increases their effective mass. Our calculations show that saturation at high pump intensities arises because the pump heavily depopulates electrons from below the Fermi level. Excellent agreement with values extracted from experimental data confirms our model. For lower pump intensities, a two-temperature model is consistent with our data, but at higher intensities, it is apparent that other processes are at work, which we attribute to Auger transitions from the valence band, which introduce complex structure into the response, due to non-equilibrium rearrangement of energy between electrons and holes.</p>","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"15 1","pages":""},"PeriodicalIF":23.4,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13434625/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148669931","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}
Haoyang Shi, Xiangming Wu, Xinwei Wang, Yufei Zhao, Jie Tian, Weiren Zhu, Guangwei Hu
{"title":"Sliding metasurface for wide-angle beam steering with sharp frequency filtering.","authors":"Haoyang Shi, Xiangming Wu, Xinwei Wang, Yufei Zhao, Jie Tian, Weiren Zhu, Guangwei Hu","doi":"10.1038/s41377-026-02422-2","DOIUrl":"10.1038/s41377-026-02422-2","url":null,"abstract":"<p><p>The advancement of electromagnetic technologies necessitates strategies to efficiently exploit spectral and spatial resources in increasingly congested and interference-prone environments. This paper demonstrates, for the first time, a fully passive sliding metasurface that unifies sharp frequency filtering and wide-angle beam steering within a single architecture, thereby establishing a two-dimensional frequency-angle selection window. The proposed metasurface replaces local phase reconfiguration with a global geometric displacement between two complementary phase profiles. This sliding strategy produces a controlled translation of the spectral centroid in reciprocal space, enabling continuous beam steering and suggesting extensibility to other frequency regimes. In the demonstrated implementation, a transmission-line-inspired design is adopted, in which stacked layers are strategically reused to form a quasi-Fabry-Pérot cavity within the meta-atom, enabling simultaneous phase modulation and frequency-selective filtering. Experimental results validate sharp spectral selectivity, ultra-wide out-of-band suppression, and stable beam steering over a ± 57° scanning range. The proposed sliding metasurface offers a compact and broadly applicable platform for next-generation electromagnetic systems, enabling a new modality for coordinated spectral-spatial wave control.</p>","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"15 1","pages":""},"PeriodicalIF":23.4,"publicationDate":"2026-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13402743/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148592433","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}
Shiyu Wang, Delang Liang, Zhi Zheng, Mingyang Qin, Yuchun Chen, Jie Sheng, Shula Chen, Lin Li, Changgan Zeng, Anlian Pan, Jinluo Cheng, Dong Sun
{"title":"Gate-tunable mid-infrared electroluminescence from Te/MoS<sub>2</sub> p-n heterojunctions.","authors":"Shiyu Wang, Delang Liang, Zhi Zheng, Mingyang Qin, Yuchun Chen, Jie Sheng, Shula Chen, Lin Li, Changgan Zeng, Anlian Pan, Jinluo Cheng, Dong Sun","doi":"10.1038/s41377-026-02402-6","DOIUrl":"10.1038/s41377-026-02402-6","url":null,"abstract":"<p><p>Mid-infrared (MIR) emitters are critical components in advanced photonic systems, driving progress in fields such as chemical sensing, environmental monitoring, medical diagnostics, thermal imaging and free-space communications. Conventional MIR emitters based on III-V heterostructures rely on complex epitaxial growth on rigid lattice-matched substrates and suffer from limited integration compatibility with CMOS or flexible platforms. Recent MIR emitters based on two-dimensional (2D) materials such as black phosphorus (BP) is more suitable for on-chip applications but faces challenges related to stability and emission efficiency. Based on the recently discovered highly efficient photoluminescence of Te, we demonstrate a gate-tunable mid-infrared light-emitting diode based on a van der Waals heterojunction formed by multilayer transition metal dichalcogenide (TMD) MoS<sub>2</sub> and tellurium (Te). The device emits polarized electroluminescence (EL) centered at 3.5 μm under forward bias at 25 K, and the EL persists up to 80 K with reduced intensity. Gate control of the MoS<sub>2</sub> Fermi level modulates the band alignment and injection efficiency, enabling dynamic tuning of the EL intensity. The emission remains spectrally stable under varying bias and gating, indicating robust band-edge recombination. These results establish the Te/TMD heterostructure as a promising platform for integrated polarized mid-infrared optoelectronics.</p>","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"15 1","pages":""},"PeriodicalIF":23.4,"publicationDate":"2026-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13402784/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148592487","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}