238 citations · 296 across the 13 of their papers we have counts for
13 papers
CRoPE: Efficient Parametrization of Rotary Positional Embedding
Beicheng Lou, Zifei Xu, Vivian W. H. Wong
Rotary positional embedding has become the state-of-the-art approach to encode position information in transformer-based models. While it is often succinctly expressed in complex l…
Twist-Induced Beam Steering and Blazing Effects in Photonic Crystal Devices
Nicolas Roy, Beicheng Lou, Shanhui Fan +2
Twisted bilayer photonic crystals introduce a twist between two stacked photonic crystal slabs, enabling strong modulation of their electromagnetic properties. The change in the tw…
Control of chirality and directionality of nonlinear metasurface light source via twisting
Huanyu Zhou, Xueqi Ni, Beicheng Lou +3
Metasurfaces have revolutionized nonlinear and quantum light manipulation in the past decade, enabling the design of materials that can tune polarization, frequency, and direction…
On-Chip Multidimensional Dynamic Control of Twisted Moiré Photonic Crystal for Smart Sensing and Imaging
Haoning Tang, Beicheng Lou, Fan Du +8
Reconfigurable optics, optical systems that have a dynamically tunable configuration, are emerging as a new frontier in photonics research. Recently, twisted moiré photonic crystal…
Three Dimensional Reconfigurable Optical Singularities in Bilayer Photonic Crystals
Xueqi Ni, Yuan Liu, Beicheng Lou +5
Metasurfaces and photonic crystals have revolutionized classical and quantum manipulation of light, and opened the door to studying various optical singularities related to phases…
On-chip optical twisted bilayer photonic crystal
Haoning Tang, Beicheng Lou, Fan Du +6
Recently, moiré engineering has been extensively employed for creating and studying novel electronic materials in two dimensions. However, its application in nanophotonic systems h…
Wormhole MAML: Meta-Learning in Glued Parameter Space
Chih-Jung Tracy Chang, Yuan Gao, Beicheng Lou
In this paper, we introduce a novel variation of model-agnostic meta-learning, where an extra multiplicative parameter is introduced in the inner-loop adaptation. Our variation cre…
Inverse design of plasma metamaterial devices for optical computing
Jesse A. Rodriguez, Ahmed I. Abdalla, Benjamin Wang +3
We apply inverse design methods to produce two-dimensional plasma metamaterial (PMM) devices. Backpropagated finite difference frequency domain (FDFD) simulations are used to desig…
Hyperbolic jigsaws and families of pseudomodular groups II
Beicheng Lou, Ser Peow Tan, Anh Duc Vo
In our previous paper, we introduced a hyperbolic jigsaw construction and constructed infinitely many non-commensurable, non-uniform, non-arithmetic lattices of $\mathrm{PSL}(2, \m…
Compressed imitation learning
Nathan Zhao, Beicheng Lou
In analogy to compressed sensing, which allows sample-efficient signal reconstruction given prior knowledge of its sparsity in frequency domain, we propose to utilize policy simpli…
Inverse design of photonic crystals through automatic differentiation
Momchil Minkov, Ian A. D. Williamson, Lucio C. Andreani +5
Gradient-based inverse design in photonics has already achieved remarkable results in designing small-footprint, high-performance optical devices. The adjoint variable method, whic…
TunaGAN: Interpretable GAN for Smart Editing
Weiquan Mao, Beicheng Lou, Jiyao Yuan
In this paper, we introduce a tunable generative adversary network (TunaGAN) that uses an auxiliary network on top of existing generator networks (Style-GAN) to modify high-resolut…
Hyperbolic jigsaws and families of pseudomodular groups I
Beicheng Lou, Ser Peow Tan, Anh Duc Vo
We show that there are infinitely many commensurability classes of pseudomodular groups, thus answering a question raised by Long and Reid. These are Fuchsian groups whose cusp set…