Investigation of Q degradation in low-loss Si3N4 from heterogeneous laser integration

Posted by dbos UCSB

Kavli Affiliate: John E. Bowers | First 5 Authors: Joel Guo, Chao Xiang, Warren Jin, Jonathan Peters, Mingxiao Li | Summary: High-performance, high-volume-manufacturing Si3N4 photonics requires extremely low waveguide losses augmented with heterogeneously integrated lasers for applications beyond traditional markets of high-capacity interconnects. State-of-the-art quality factors (Q) over 200 million at 1550 nm have been […]


Continue.. Investigation of Q degradation in low-loss Si3N4 from heterogeneous laser integration

Data-driven fine-grained region discovery in the mouse brain with transformers

Posted by dbos UCSF

Kavli Affiliate: Reza Abbasi Asl | Authors: Alex Jihun Lee, Shenqin Yao, Nicholas Lusk, Hongkui Zeng, Bosiljka Tasic and Reza Abbasi-Asl | Summary: Technologies such as spatial transcriptomics offer unique opportunities to define the spatial organization of the mouse brain. We developed an unsupervised training scheme and novel transformer-based deep learning architecture to detect spatial […]


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The polarization hierarchy for polynomial optimization over convex bodies, with applications to nonnegative matrix rank

Posted by dbos UCSB

Kavli Affiliate: David Gross | First 5 Authors: Martin Plávala, Laurens T. Ligthart, David Gross, , | Summary: We construct a convergent family of outer approximations for the problem of optimizing polynomial functions over convex bodies subject to polynomial constraints. This is achieved by generalizing the polarization hierarchy, which has previously been introduced for the […]


Continue.. The polarization hierarchy for polynomial optimization over convex bodies, with applications to nonnegative matrix rank

LRM-Zero: Training Large Reconstruction Models with Synthesized Data

Posted by dbos UCAS

Kavli Affiliate: Yi Zhou | First 5 Authors: Desai Xie, Sai Bi, Zhixin Shu, Kai Zhang, Zexiang Xu | Summary: We present LRM-Zero, a Large Reconstruction Model (LRM) trained entirely on synthesized 3D data, achieving high-quality sparse-view 3D reconstruction. The core of LRM-Zero is our procedural 3D dataset, Zeroverse, which is automatically synthesized from simple […]


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Integrated Modeling, Verification, and Code Generation for Unmanned Aerial Systems

Posted by dbos UCAS

Kavli Affiliate: Long Zhang | First 5 Authors: Jianyu Zhang, Long Zhang, Yixuan Wu, Linru Ma, Feng Yang | Summary: Unmanned Aerial Systems (UAS) are currently widely used in safety-critical fields such as industrial production, military operations, and disaster relief. Due to the diversity and complexity of application scenarios, UAS have become increasingly intricate. The […]


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Joint Power Allocation and Beamforming Design for Active IRS-Aided Directional Modulation Secure Systems

Posted by Caltech

Kavli Affiliate: Wei Gao | First 5 Authors: Yifan Zhao, Xiaoyu Wang, Kaibo Zhou, Xuehui Wang, Yan Wang | Summary: Since the secrecy rate (SR) performance improvement obtained by secure directional modulation (DM) network is limited, an active intelligent reflective surface (IRS)-assisted DM network is considered to attain a high SR. To address the SR […]


Continue.. Joint Power Allocation and Beamforming Design for Active IRS-Aided Directional Modulation Secure Systems

Joint Power Allocation and Beamforming Design for Active IRS-Aided Directional Modulation Secure Systems

Posted by dbos Caltech

Kavli Affiliate: Wei Gao | First 5 Authors: Yifan Zhao, Xiaoyu Wang, Kaibo Zhou, Xuehui Wang, Yan Wang | Summary: Since the secrecy rate (SR) performance improvement obtained by secure directional modulation (DM) network is limited, an active intelligent reflective surface (IRS)-assisted DM network is considered to attain a high SR. To address the SR […]


Continue.. Joint Power Allocation and Beamforming Design for Active IRS-Aided Directional Modulation Secure Systems

Free-space quantum information platform on a chip

Posted by dbos Caltech

Kavli Affiliate: Ali Hajimiri | First 5 Authors: Volkan Gurses, Samantha I. Davis, Neil Sinclair, Maria Spiropulu, Ali Hajimiri | Summary: Emerging technologies that employ quantum physics offer fundamental enhancements in information processing tasks, including sensing, communications, and computing. Here, we introduce the quantum phased array, which generalizes the operating principles of phased arrays and […]


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Chain of Preference Optimization: Improving Chain-of-Thought Reasoning in LLMs

Posted by dbos Caltech

Kavli Affiliate: Wei Gao | First 5 Authors: Xuan Zhang, Chao Du, Tianyu Pang, Qian Liu, Wei Gao | Summary: The recent development of chain-of-thought (CoT) decoding has enabled large language models (LLMs) to generate explicit logical reasoning paths for complex problem-solving. However, research indicates that these paths are not always deliberate and optimal. The […]


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Probing the polarized emission from SMC X-1: the brightest X-ray pulsar observed by IXPE

Posted by dbos Stanford

Kavli Affiliate: Nicola Omodei | First 5 Authors: Sofia V. Forsblom, Sergey S. Tsygankov, Juri Poutanen, Victor Doroshenko, Alexander A. Mushtukov | Summary: Recent observations of X-ray pulsars (XRPs) performed by the Imaging X-ray Polarimetry Explorer (IXPE) have made it possible to investigate the intricate details of these objects in a new way, thanks to […]


Continue.. Probing the polarized emission from SMC X-1: the brightest X-ray pulsar observed by IXPE