dbos – Page 18 – Kavli Institute Pre-Print Publications

Ultrafast All-Optical Measurement of Squeezed Vacuum in a Lithium Niobate Nanophotonic Circuit

Posted by dbos February 1, 2025February 10, 2025Caltech

Kavli Affiliate: Alireza Marandi | First 5 Authors: James Williams, Elina Sendonaris, Rajveer Nehra, Robert M Gray, Ryoto Sekine | Summary: Squeezed vacuum, a fundamental resource for continuous-variable quantum information processing, has been used to demonstrate quantum advantages in sensing, communication, and computation. While most experiments use homodyne detection to characterize squeezing and are therefore […]

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Spectral Sufficient Conditions for Graph Factors

Posted by dbos February 1, 2025Peking

Kavli Affiliate: Ke Wang | First 5 Authors: Fengyun Ren, Shumin Zhang, Ke Wang, , | Summary: The ${K_{1,1}, K_{1,2},C_m: mgeq3}$-factor of a graph is a spanning subgraph whose each component is an element of ${K_{1,1}, K_{1,2},C_m: mgeq3}$. In this paper, through the graph spectral methods, we establish the lower bound of the signless Laplacian […]

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Rigorous expansions of modular forms at CM points, I: Denominators

Posted by dbos February 1, 2025February 10, 2025Cornell

Kavli Affiliate: Chris Xu | First 5 Authors: Chris Xu, , , , | Summary: We describe an algorithm to rigorously compute the power series expansion at a CM point of a weight $2$ cusp form of level coprime to $6$. Our algorithm works by bounding the denominators that appear due to ramification, and without […]

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MIM: Multi-modal Content Interest Modeling Paradigm for User Behavior Modeling

Posted by dbos February 1, 2025February 10, 2025Berkeley

Kavli Affiliate: Xiang Zhang | First 5 Authors: Bencheng Yan, Si Chen, Shichang Jia, Jianyu Liu, Yueran Liu | Summary: Click-Through Rate (CTR) prediction is a crucial task in recommendation systems, online searches, and advertising platforms, where accurately capturing users’ real interests in content is essential for performance. However, existing methods heavily rely on ID […]

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Theory of ab initio downfolding with arbitrary range electron-phonon coupling

Posted by dbos January 31, 2025February 10, 2025Berkeley

Kavli Affiliate: Jeffrey B. Neaton | First 5 Authors: Norm M. Tubman, Christopher J. N. Coveney, Chih-En Hsu, Andres Montoya-Castillo, Marina R. Filip | Summary: Ab initio downfolding describes the electronic structure of materials within a low-energy subspace, often around the Fermi level. Typically starting from mean-field calculations, this framework allows for the calculation of […]

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Characterization of the Teledyne COSMOS Camera: A Large Format CMOS Image Sensor for Astronomy

Posted by dbos January 31, 2025February 10, 2025MIT

Kavli Affiliate: Gabor Furesz | First 5 Authors: Christopher Layden, Jill Juneau, Gustav Pettersson, Nathan Lourie, Benjamin Schneider | Summary: The Teledyne COSMOS-66 is a next-generation CMOS camera designed for astronomical imaging, featuring a large-format sensor ($8120 times 8120$ pixels, each $10 mu m$), high quantum efficiency, high frame rates, and a correlated multi-sampling mode […]

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Low-Rank Adapting Models for Sparse Autoencoders

Posted by dbos January 31, 2025Uncategorized

Kavli Affiliate: Max Tegmark | First 5 Authors: Matthew Chen, Joshua Engels, Max Tegmark, , | Summary: Sparse autoencoders (SAEs) decompose language model representations into a sparse set of linear latent vectors. Recent works have improved SAEs using language model gradients, but these techniques require many expensive backward passes during training and still cause a […]

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A Spectroscopically Calibrated Prescription for Extracting PAH Flux from JWST MIRI Imaging

Posted by dbos January 31, 2025Peking

Kavli Affiliate: Claudio Ricci | First 5 Authors: Grant P. Donnelly, Thomas S. -Y. Lai, Lee Armus, Tanio Díaz-Santos, Kirsten L. Larson | Summary: We introduce a prescription for estimating the flux of the 7.7 micron and 11.3 micron polycyclic aromatic hydrocarbon (PAH) features from broadband JWST/MIRI images. Probing PAH flux with MIRI imaging data […]

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Optical Readout of Coherent Nuclear Spins Beyond the NV Center Electron T$_1$

Posted by dbos January 31, 2025February 10, 2025Cornell

Kavli Affiliate: Gregory D. Fuchs | First 5 Authors: Johnathan Kuan, Gregory D. Fuchs, , , | Summary: The nitrogen-vacancy (NV) center is an emerging platform for constructing inertial sensors. Its native nitrogen spin can serve as a gyroscope using Ramsey interferometry protocols. The sensitivities of these nuclear-spin-based NV gyroscopes are limited by the phase […]

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Reactive path ensembles within nonequilibrium steady-states

Posted by dbos January 31, 2025Berkeley

Kavli Affiliate: David T. Limmer | First 5 Authors: Aditya N. Singh, David T. Limmer, , , | Summary: The modern theory of rare events is grounded in near equilibrium ideas, however many systems of modern interest are sufficiently far from equilibrium that traditional approaches do not apply. Using the recently developed variational path sampling […]

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