Optical Investigations of Coherence and Relaxation Dynamics of a Thulium-doped Yttrium Gallium Garnet Crystal at sub-Kelvin Temperatures for Optical Quantum Memory

Posted by klaurent Delft

Kavli Affiliate: Wolfgang Tittel | Summary:Rare-earth ion-doped crystals are of great interest for quantum memories, a central component in future quantum repeaters. To assess the promise of 1$%$ Tm$^3+$-doped yttrium gallium garnet (Tm:YGG), we report measurements of optical coherence and energy-level lifetimes of its $^3$H$_6$ $leftrightarrow$ $^3$H$_4$ transition at a temperature of around 500 mK […]


Continue.. Optical Investigations of Coherence and Relaxation Dynamics of a Thulium-doped Yttrium Gallium Garnet Crystal at sub-Kelvin Temperatures for Optical Quantum Memory

The Size-luminosity Relation of the AGN Torus Determined from the Comparison between Optical and Mid-infrared Variability

Posted by dbos Peking

Kavli Affiliate: Luis C. Ho | First 5 Authors: Minjin Kim, Suyeon Son, Luis C. Ho, , | Summary: We investigate the optical variability of low-redshift ($0.15< zleq0.4$) active galactic nuclei using the multi-epoch data from the Zwicky Transient Facility. We find that a damped random walk model well describes the ensemble structure function in […]


Continue.. The Size-luminosity Relation of the AGN Torus Determined from the Comparison between Optical and Mid-infrared Variability

Coherent Erbium Spin Defects in Colloidal Nanocrystal Hosts

Posted by klaurent Berkeley

Kavli Affiliate: Paul Alivisatos | Summary:We demonstrate nearly a microsecond of spin coherence in Er3+ ions doped in cerium dioxide nanocrystal hosts, despite a large gyromagnetic ratio and nanometric proximity of the spin defect to the nanocrystal surface. The long spin coherence is enabled by reducing the dopant density below the instantaneous diffusion limit in […]


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SSNVC: Single Stream Neural Video Compression with Implicit Temporal Information

Posted by dbos Berkeley

Kavli Affiliate: Feng Wang | First 5 Authors: Feng Wang, Haihang Ruan, Zhihuang Xie, Ronggang Wang, Xiangyu Yue | Summary: Recently, Neural Video Compression (NVC) techniques have achieved remarkable performance, even surpassing the best traditional lossy video codec. However, most existing NVC methods heavily rely on transmitting Motion Vector (MV) to generate accurate contextual features, […]


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The New Worlds Simulations: Large-scale Simulations across Three Cosmologies

Posted by dbos Chicago

Kavli Affiliate: Salman Habib | First 5 Authors: Katrin Heitmann, Thomas Uram, Nicholas Frontiere, Salman Habib, Adrian Pope | Summary: In this paper we describe the set of “New Worlds Simulations”, three very large cosmology simulations, Qo’noS, Vulcan, and Ferenginar, that were carried out on the Summit supercomputer with the Hardware/Hybrid Cosmology Code, HACC. The […]


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EFFOcc: A Minimal Baseline for EFficient Fusion-based 3D Occupancy Network

Posted by dbos Peking

Kavli Affiliate: Ke Wang | First 5 Authors: Yining Shi, Kun Jiang, Ke Wang, Kangan Qian, Yunlong Wang | Summary: 3D occupancy prediction (Occ) is a rapidly rising challenging perception task in the field of autonomous driving which represents the driving scene as uniformly partitioned 3D voxel grids with semantics. Compared to 3D object detection, […]


Continue.. EFFOcc: A Minimal Baseline for EFficient Fusion-based 3D Occupancy Network

PanoSSC: Exploring Monocular Panoptic 3D Scene Reconstruction for Autonomous Driving

Posted by dbos Peking

Kavli Affiliate: Ke Wang | First 5 Authors: Yining Shi, Jiusi Li, Kun Jiang, Ke Wang, Yunlong Wang | Summary: Vision-centric occupancy networks, which represent the surrounding environment with uniform voxels with semantics, have become a new trend for safe driving of camera-only autonomous driving perception systems, as they are able to detect obstacles regardless […]


Continue.. PanoSSC: Exploring Monocular Panoptic 3D Scene Reconstruction for Autonomous Driving

Large-Scale Contextual Market Equilibrium Computation through Deep Learning

Posted by dbos Berkeley

Kavli Affiliate: Feng Wang | First 5 Authors: Yunxuan Ma, Yide Bian, Hao Xu, Weitao Yang, Jingshu Zhao | Summary: Market equilibrium is one of the most fundamental solution concepts in economics and social optimization analysis. Existing works on market equilibrium computation primarily focus on settings with relatively few buyers. Motivated by this, our paper […]


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Electrically Tunable Magnetoconductance of Close-Packed CVD Bilayer Graphene Layer Stacking Walls

Posted by dbos Berkeley

Kavli Affiliate: Feng Wang | First 5 Authors: Qicheng Zhang, Sheng Wang, Zhaoli Gao, Sebastian Hurtado-Parra, Joel Berry | Summary: Quantum valley Hall (QVH) domain wall states are a new class of one-dimensional (1D) one-way conductors that are topologically protected in the absence of valley mixing. Development beyond a single QVH channel raises important new […]


Continue.. Electrically Tunable Magnetoconductance of Close-Packed CVD Bilayer Graphene Layer Stacking Walls