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Updated: Sep 26, 2025
09:33
Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
Published on: June 7, 2019
6.4K
Polarization coincidence images from metasurfaces with HOM-type interference
Tsz Kit Yung1, Jiawei Xi1, Hong Liang1
1Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China.
Iscience
|April 18, 2022
Summary
Metasurfaces combined with single-photon cameras enable "HOM microscopy" with polarization control. This technique generates images with unique two-photon interference and polarization signatures for advanced applications.
Area of Science:
- Optics and Photonics
- Quantum Imaging
Background:
- Metasurfaces offer advanced light structuring for optical components.
- Coincidence imaging enhances signal-to-noise ratio in low-light conditions.
Purpose of the Study:
- To integrate metasurface polarization control with Hong-Ou-Mandel (HOM) interference for novel imaging.
- To demonstrate tailor-made two-photon interference and polarization coincidence signatures.
Main Methods:
- Utilizing metasurfaces and single-photon avalanche diode (SPAD) cameras.
- Employing Hong-Ou-Mandel (HOM)-type interference with orthogonal linear-polarized photons.
- Analyzing pairwise second-order coherence statistics across image pixels.
Main Results:
- Generated images with correlated, anticorrelated, and uncorrelated polarization coincidence features.
- Added polarization sensitivity to existing HOM microscopy capabilities.
- Demonstrated control over two-photon interference patterns.
Conclusions:
- The developed technique extends HOM microscopy by incorporating polarization.
- This method offers potential for biological imaging and security applications.
- Enables unique polarization coincidence signatures for advanced optical measurements.
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