Xiao Li

lx011632 [at] gmail.com

Hi! My name is Xiao. I'm working as an Imaging System Architect at Google. My expertise spans various domains in spatial computing, including VR eye tracking (at Meta), computational photography and optical computing (at Princeton), AR display optics (at Magic Leap), and SLAM-based head pose tracking for AR headsets (at Magic Leap). I'm interested in developing physical AI systems for robotics, imaging, and computing by applying novel hardware and software co-design to improve system-level performance.

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Publications

“*” stands for equal contribution.

Spatially varying nanophotonic neural networks
Kaixuan Wei , Xiao Li , Johannes Froech , Praneeth Chakravarthula, James Whitehead, Ethan Tseng, Arka Majumdar, Felix Heide
📚 Science Advances

• Summary: Demonstrated a compact metalens camera that performs neural network inference during the image capture. This optical computing prototype performs >99% FLOPS with photons and outperforms AlexNet on CIFAR-10 blind test classification accuracy for the first time.

Thin On-Sensor Nanophotonic Array Cameras
Praneeth Chakravarthula, Jipeng Sun, Xiao Li , Chenyang Lei, Gene Chou, Mario Bijelic, Johannes Froesch, Arka Majumdar, Felix Heide
📚 SIGGRAPH ASIA 2023

• Summary: Demonstrated a broadband metalens array camera with learned probabilistic deconvolution to improve the image quality.

Seeing Through Obstructions with Diffractive Cloaking
Zheng Shi, Yuval Bahat, Seung-Hwan Baek, Qiang Fu, Hadi Amata, Xiao Li , Praneeth Chakravarthula, Wolfgang Heidrich, Felix Heide
📚 SIGGRAPH 2022

• Summary: Proposed a computational monocular camera that cloaks unwanted obstructions by jointly designing a diffractive optical element at the aperture plane and a feature-based deep learning reconstruction network to recover the unobstructed image.

Tunable terahertz wave generation through a bimodal laser diode and plasmonic photomixer
S.-H. Yang, R. Watts, X. Li , N. Wang, V. Cojocaru, J. O’Gorman, L. P. Barry, and M. Jarrahi
📚 Optics Express

• Summary: Demonstrated a compact broadband terahertz source based on difference frequency generation by pumping a plasmonic photomixer with the dual frequencies from a two-section digital distributed feedback laser diode.

Patents

• Eyeball Camera for Display System Calibration, US 2021/0014477, WO/2021/011420, CN114128256, EP3997867
• Waveguides with High Index Materials and Methods of Fabrication thereof, US 2022/0128817, WO/2020/185954
• Systems and Methods for External Light Management, WO2020/023266, US 2021/0231951, CN113811803, EP3938824

Non-work stuff

• When I'm not playing with cameras and pixels at work, I like taking photos, with street photography being my favorite. Here's selected photos that I took with an iPhone.