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Mesh of Spatiotemporal Optical Vortices with Programmable Intensity Nulls
Jinxin Wu, Dan Wang, Qingqing Liang, Jianhua Hu, Jiahao Dong, Jijun Feng, Yi Liu
https://arxiv.org/abs/2511.18087 https://arxiv.org/pdf/2511.18087 https://arxiv.org/html/2511.18087
arXiv:2511.18087v1 Announce Type: new
Abstract: Light carrying transverse orbital angular momentum (T-OAM) in the form of spatiotemporal optical vortices (STOVs) is opening new degrees of freedom for structured light manipulation. Such spatiotemporal wavepackets hold significant potential for optical trapping, analog optical computing, studying photonic symmetry and topology, among others. Up to now, synthesizing of such vortices is limited in one dimension, either in temporal or spatial domain. In this work, we propose and experimentally demonstrate a two-dimensional flexible mesh of spatiotemporal optical vortices (M-STOV) with programmable intensity nulls, and analyze their diffraction patterns for detection. Furthermore, we extend the spectral range of M-STOV via second-harmonic generation while examining the transfer of OAM in this nonlinear process. This study establishes a foundational framework for designing higher dimensional spatiotemporal vortex fields and promises a high-capacity information carrier based on ST optical vortices.
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Apple Daily founder Jimmy Lai is found guilty of colluding with foreign forces to endanger national security and conspiring to publish seditious articles (Kanis Leung/Associated Press)
https://apnews.com/article/hong-kong-jimmy-lai-ve…

Former Hong Kong pro-democracy media mogul Jimmy Lai convicted in landmark national security trial
Jimmy Lai, the former Hong Kong media mogul and outspoken critic of Beijing, has been convicted in a landmark national security trial in the city’s court. Three government-vetted judges on Monday found Lai, 78, guilty of conspiring with others to collude with foreign forces to endanger national security and conspiracy to publish seditious articles. He pleaded not guilty to all charges. Under Hong Kong’s sweeping national security law, Lai could face up to life imprisonment. A mitigation hea…

Dat protesteren met trekkers moet echt stoppen. Zonder die tractoren zou het een treurig en niet zichtbaar groepje zijn. Verder vindt FDF het ook bij navraag prima om democratisch gekozen vertegenwoordigers (statenleden) te intimideren.
https://www.rtl.nl/nieuws/binnenland/…

Boeren met trekkers naar provinciehuis Den Bosch, dag na 'intimiderende' brieven
Tientallen boeren zijn vandaag met trekkers naar het provinciehuis in Den Bosch gekomen om daar te protesteren tegen nieuwe stikstofmaatregelen. Daar wordt vandaag over gestemd. De aanwezigheid van de boeren volgt op een actie van Farmers Defence Force (FDF) gisteren, waarbij Brabantse Statenleden 'deurwaarders' op hun stoep kregen.

🌞 Dual use of land for solar energy production and cultivation found feasible in Finland
... few people realize what a win agrivoltaics are for farmers and the environment!
https://techxplore.com/news/2025-12-dual-solar-energy-production-cultivation.ht…

Dual use of land for solar energy production and cultivation found feasible in Finland
Open farmlands are ideal locations for installing solar panels, but the most common method, which involves covering a large area with south-facing panels, prevents the field from being used for simultaneous farming. The panels can also be installed vertically, allowing crops to be grown in the same field. However, this solution is still rare in Finland.

Sean Charles Dunn,
the former Department of Justice employee who threw a sandwichat a federal agent during Donald Trump’s law enforcement surge in Washington DC
was found NOT GUILTY of assault by a DC jury on Thursday in the latest legal rebuke of the federal intervention.

Quantum walks through generalized graph composition
Arjan Cornelissen
https://arxiv.org/abs/2510.04973 https://arxiv.org/pdf/2510.04973

Quantum walks through generalized graph composition
In this work, we generalize the recently-introduced graph composition framework to the non-boolean setting. A quantum algorithm in this framework is represented by a hypergraph, where each hyperedge is adjacent to multiple vertices. The input and output to the quantum algorithm is represented by a set of boundary vertices, and the hyperedges act like switches, connecting the input vertex to the output that the algorithm computes. Apart from generalizing the graph composition framework, our ne…

Personalized Motion Guidance Framework for Athlete-Centric Coaching
Ryota Takamidoa, Chiharu Suzukia, Hiroki Nakamoto
https://arxiv.org/abs/2510.10496 https://

Personalized Motion Guidance Framework for Athlete-Centric Coaching
A critical challenge in contemporary sports science lies in filling the gap between group-level insights derived from controlled hypothesis-driven experiments and the real-world need for personalized coaching tailored to individual athletes' unique movement patterns. This study developed a Personalized Motion Guidance Framework (PMGF) to enhance athletic performance by generating individualized motion-refinement guides using generative artificial intelligence techniques. PMGF leverages a vertic…

VeritasFi: An Adaptable, Multi-tiered RAG Framework for Multi-modal Financial Question Answering
Zhenghan Tai, Hanwei Wu, Qingchen Hu, Jijun Chi, Hailin He, Lei Ding, Tung Sum Thomas Kwok, Bohuai Xiao, Yuchen Hua, Suyuchen Wang, Peng Lu, Muzhi Li, Yihong Wu, Liheng Ma, Jerry Huang, Jiayi Zhang, Gonghao Zhang, Chaolong Jiang, Jingrui Tian, Sicheng Lyu, Zeyu Li, Boyu Han, Fengran Mo, Xinyue Yu, Yufei Cui, Ling Zhou, Xinyu Wang

VeritasFi: An Adaptable, Multi-tiered RAG Framework for Multi-modal Financial Question Answering
Retrieval-Augmented Generation (RAG) is becoming increasingly essential for Question Answering (QA) in the financial sector, where accurate and contextually grounded insights from complex public disclosures are crucial. However, existing financial RAG systems face two significant challenges: (1) they struggle to process heterogeneous data formats, such as text, tables, and figures; and (2) they encounter difficulties in balancing general-domain applicability with company-specific adaptation. To…

Geometry of tropical mutation surfaces with a single mutation
Tomoki Oda
https://arxiv.org/abs/2510.11991 https://arxiv.org/pdf/2510.11991

Geometry of tropical mutation surfaces with a single mutation
Recently, Escobar, Harada, and Manon introduced the theory of polyptych lattices. This theory gives a general framework for constructing projective varieties from polytopes in a polyptych lattice. When all the mutations of the polyptych lattice are linear isomorphisms, this framework recovers the classical theory of toric varieties. In this article, we study rank two polyptych lattices with a single mutation. We prove that the associated projective surface $X$ is a $\mathbb{G}_m$-surface that a…

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城 VI - 上面和下面 ⬆️⬇️
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