Quantum optics · Meta-optics
Columbia University · Nanfang Yu Group
Zezheng Zhu
Freddie Zhu
PhD Candidate in Applied Physics & Applied Mathematics
Building optical systems from device fabrication to experimental demonstration.

Research
I develop nanophotonic systems that shape and measure light, with applications in quantum science, imaging, and biophotonics.
MethodsOptical design · nanofabrication · experiment
- 01Quantum science
Meta-optics for quantum systems
Compact optical platforms for shaping light and enabling new ways to control atoms and quantum systems.
- 02Computational nanophotonics
Imaging and wavefront control
Optical and computational approaches to imaging, sensing, and controlling light in complex environments.
- 03Devices and applications
Integrated and bio-inspired photonics
Nanophotonic devices that connect free-space and integrated optics for emerging imaging, sensing, and biomedical applications.
Publications
Quantum optics · Holography
Computational imaging
Millimeter-wave imaging
Atomic physics · Mid-infrared
Atomic physics · Optical tweezers
Neural interfaces
Nano-Optics for Depth Sensing
Computational imaging
Computational imaging
Neural interfaces
Resonant nanophotonics
About
Zezheng “Freddie” Zhu is an optical scientist and experimentalist and a Ph.D. candidate in Applied Physics at Columbia University. His research spans meta-optics, nanofabrication, computational imaging, and biomedical optical systems.
Freddie works across device fabrication, optical characterization, system integration, and experimental validation. His projects include metasurface-enabled neural fluorescence imaging, polarization-based depth sensing, and large-scale optical tweezer arrays. He is particularly interested in connecting advanced optical technologies with other fields to create systems that extend beyond the capabilities of conventional optics.
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