CausalSR: Structural Causal Model-Driven Super-Resolution with Counterfactual Inference

Posted by dbos Berkeley

Kavli Affiliate: Feng Wang | First 5 Authors: Zhengyang Lu, Bingjie Lu, Feng Wang, , | Summary: Physical and optical factors interacting with sensor characteristics create complex image degradation patterns. Despite advances in deep learning-based super-resolution, existing methods overlook the causal nature of degradation by adopting simplistic black-box mappings. This paper formulates super-resolution using structural […]


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Two-optical-cycle pulses from nanophotonic two-color soliton compression

Posted by dbos Caltech

Kavli Affiliate: Alireza Marandi | First 5 Authors: Robert M. Gray, Ryoto Sekine, Maximilian Shen, Thomas Zacharias, James Williams | Summary: Few- and single-cycle optical pulses and their associated ultra-broadband spectra have been crucial in the progress of ultrafast science and technology. Multi-color waveforms composed of independently manipulable ultrashort pulses in distinct spectral bands offer […]


Continue.. Two-optical-cycle pulses from nanophotonic two-color soliton compression

Two-optical-cycle pulses from nanophotonic two-color soliton compression

Posted by Caltech

Kavli Affiliate: Alireza Marandi | First 5 Authors: Robert M. Gray, Ryoto Sekine, Maximilian Shen, Thomas Zacharias, James Williams | Summary: Few- and single-cycle optical pulses and their associated ultra-broadband spectra have been crucial in the progress of ultrafast science and technology. Moreover, multi-color waveforms composed of independently manipulable ultrashort pulses in distinct spectral bands […]


Continue.. Two-optical-cycle pulses from nanophotonic two-color soliton compression

Generating Negative Samples for Multi-Modal Recommendation

Posted by dbos Cornell

Kavli Affiliate: Dan Luo | First 5 Authors: Yanbiao Ji, Yue Ding, Dan Luo, Chang Liu, Jing Tong | Summary: Multi-modal recommender systems (MMRS) have gained significant attention due to their ability to leverage information from various modalities to enhance recommendation quality. However, existing negative sampling techniques often struggle to effectively utilize the multi-modal data, […]


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Federated Retrieval Augmented Generation for Multi-Product Question Answering

Posted by dbos Cornell

Kavli Affiliate: Dan Luo | First 5 Authors: Parshin Shojaee, Sai Sree Harsha, Dan Luo, Akash Maharaj, Tong Yu | Summary: Recent advancements in Large Language Models and Retrieval-Augmented Generation have boosted interest in domain-specific question-answering for enterprise products. However, AI Assistants often face challenges in multi-product QA settings, requiring accurate responses across diverse domains. […]


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“Molecular waveplate” for the control of ultrashort pulses carrying orbital angular momentum

Posted by dbos Berkeley

Kavli Affiliate: Feng Wang | First 5 Authors: Chengqing Xu, Lixin He, Wanchen Tao, Xiaosong Zhu, Feng Wang | Summary: Ultrashort laser pulses carrying orbital angular momentum (OAM) have become essential tools in Atomic, Molecular, and Optical (AMO) studies, particularly for investigating strong-field light-matter interactions. However, controlling and generating ultrashort vortex pulses presents significant challenges, […]


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Towards Accurate Unified Anomaly Segmentation

Posted by dbos Berkeley

Kavli Affiliate: Xiang Zhang | First 5 Authors: Wenxin Ma, Qingsong Yao, Xiang Zhang, Zhelong Huang, Zihang Jiang | Summary: Unsupervised anomaly detection (UAD) from images strives to model normal data distributions, creating discriminative representations to distinguish and precisely localize anomalies. Despite recent advancements in the efficient and unified one-for-all scheme, challenges persist in accurately […]


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Time-resolved spectral diffusion of a multimode mechanical memory

Posted by dbos Delft

Kavli Affiliate: Simon Groblacher | First 5 Authors: Niccolò Fiaschi, Lorenzo Scarpelli, Alexander Rolf Korsch, Amirparsa Zivari, Simon Gröblacher | Summary: High-frequency phonons hold great promise as carriers of quantum information on-chip and as quantum memories. Due to their coherent interaction with several systems, their compact mode volume and slow group velocity, multiple experiments have […]


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Imaging signatures of edge currents in a magnetic topological insulator

Posted by dbos Cornell

Kavli Affiliate: Katja C. Nowack | First 5 Authors: G. M. Ferguson, Run Xiao, Anthony R. Richardella, Austin Kaczmarek, Nitin Samarth | Summary: Magnetic topological insulators (MTIs) host topologically protected edge states, but the role that these edge states play in electronic transport remains unclear. Using scanning superconducting quantum interference device (SQUID) microscopy, we performed […]


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Energy-Efficient Ultrashort-Pulse Characterization using Nanophotonic Parametric Amplification

Posted by Caltech

Kavli Affiliate: Alireza Marandi | First 5 Authors: Thomas Zacharias, Robert Gray, Ryoto Sekine, James Williams, Selina Zhou | Summary: The growth of ultrafast nanophotonic circuits necessitates the development of energy-efficient on-chip pulse characterization techniques. Nanophotonic realizations of Frequency Resolved Optical Gating, a common pulse characterization technique in bulk optics, have been challenging due to […]


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