Widely-tunable optical parametric oscillator in lithium niobate nanophotonics

Kavli Affiliate: Alireza Marandi | First 5 Authors: Luis Ledezma, Arkadev Roy, Luis Costa, Ryoto Sekine, Robert Gray | Summary: Widely-tunable coherent sources in nanophotonics are desirable for a multitude of applications ranging from communications to sensing. The mid-infrared spectral region (wavelengths beyond 2 $mu$m) is particularly important for applications relying on molecular spectroscopy. Among […]


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Octave-spanning tunable parametric oscillation in nanophotonics

Kavli Affiliate: Alireza Marandi | First 5 Authors: Luis Ledezma, Arkadev Roy, Luis Costa, Ryoto Sekine, Robert Gray | Summary: Widely-tunable coherent sources are desirable in nanophotonics for a multitude of applications ranging from communications to sensing. The mid-infrared spectral region (wavelengths beyond 2 $mu$m) is particularly important for applications relying on molecular spectroscopy. Among […]


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Nonreciprocal Infrared Absorption via Resonant Magneto-optical Coupling to InAs

Kavli Affiliate: Harry Atwater | First 5 Authors: Komron Shayegan, Bo Zhao, Yonghwi Kim, Shanhui Fan, Harry Atwater | Summary: Nonreciprocal elements are a vital building block of electrical and optical systems. In the infrared regime, there is a particular interest in structures that break reciprocity because their thermal absorptive (and emissive) properties should not […]


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Mid-Air Helicopter Delivery at Mars Using a Jetpack

Kavli Affiliate: Morteza Gharib | First 5 Authors: Jeff Delaune, Jacob Izraelevitz, Samuel Sirlin, David Sternberg, Louis Giersch | Summary: Mid-Air Helicopter Delivery (MAHD) is a new Entry, Descent and Landing (EDL) architecture to enable in situ mobility for Mars science at lower cost than previous missions. It uses a jetpack to slow down a […]


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PUFA-GAN: A Frequency-Aware Generative Adversarial Network for 3D Point Cloud Upsampling

Kavli Affiliate: Wei Gao | First 5 Authors: Hao Liu, Hui Yuan, Junhui Hou, Raouf Hamzaoui, Wei Gao | Summary: We propose a generative adversarial network for point cloud upsampling, which can not only make the upsampled points evenly distributed on the underlying surface but also efficiently generate clean high frequency regions. The generator of […]


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Context-Hierarchy Inverse Reinforcement Learning

Kavli Affiliate: Wei Gao | First 5 Authors: Wei Gao, David Hsu, Wee Sun Lee, , | Summary: An inverse reinforcement learning (IRL) agent learns to act intelligently by observing expert demonstrations and learning the expert’s underlying reward function. Although learning the reward functions from demonstrations has achieved great success in various tasks, several other […]


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DialMed: A Dataset for Dialogue-based Medication Recommendation

Kavli Affiliate: Wei Gao | First 5 Authors: Zhenfeng He, Yuqiang Han, Zhenqiu Ouyang, Wei Gao, Hongxu Chen | Summary: Medication recommendation is a crucial task for intelligent healthcare systems. Previous studies mainly recommend medications with electronic health records(EHRs). However, some details of interactions between doctors and patients may be ignored in EHRs, which are […]


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OctAttention: Octree-based Large-scale Contexts Model for Point Cloud Compression

Kavli Affiliate: Wei Gao | First 5 Authors: Chunyang Fu, Ge Li, Rui Song, Wei Gao, Shan Liu | Summary: In point cloud compression, sufficient contexts are significant for modeling the point cloud distribution. However, the contexts gathered by the previous voxel-based methods decrease when handling sparse point clouds. To address this problem, we propose […]


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Multi-direction and Multi-scale Pyramid in Transformer for Video-based Pedestrian Retrieval

Kavli Affiliate: Wei Gao | First 5 Authors: Xianghao Zang, Ge Li, Wei Gao, , | Summary: In video surveillance, pedestrian retrieval (also called person re-identification) is a critical task. This task aims to retrieve the pedestrian of interest from non-overlapping cameras. Recently, transformer-based models have achieved significant progress for this task. However, these models […]


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Deep sub-wavelength localization of light and sound in dielectric resonators

Kavli Affiliate: Mohammad Mirhosseini | First 5 Authors: Alkim Bozkurt, Chaitali Joshi, Mohammad Mirhosseini, , | Summary: Optomechanical crystals provide coupling between phonons and photons by confining them to commensurate wavelength-scale dimensions. We present a new concept for designing optomechanical crystals capable of achieving unprecedented coupling rates by confining optical and mechanical waves to deep […]


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