Super-resolution imaging based on active optical intensity interferometry
- URL: http://arxiv.org/abs/2404.15685v1
- Date: Wed, 24 Apr 2024 06:51:01 GMT
- Title: Super-resolution imaging based on active optical intensity interferometry
- Authors: Lu-Chuan Liu, Cheng Wu, Wei Li, Yu-Ao Chen, Frank Wilczek, Xiao-Peng Shao, Feihu Xu, Qiang Zhang, Jian-Wei Pan,
- Abstract summary: In contrast to amplitude (phase) interferometry, intensity interferometry exploits the quantum nature of light to measure the photon bunching effect in thermal light.
In outdoor environments, we image two-dimension millimeter-level targets over 1.36 kilometers at a resolution of 14 times the diffraction limit of a single telescope.
- Score: 14.452089688779049
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Long baseline diffraction-limited optical aperture synthesis technology by interferometry plays an important role in scientific study and practical application. In contrast to amplitude (phase) interferometry, intensity interferometry -- which exploits the quantum nature of light to measure the photon bunching effect in thermal light -- is robust against atmospheric turbulence and optical defects. However, a thermal light source typically has a significant divergence angle and a low average photon number per mode, forestalling the applicability over long ranges. Here, we propose and demonstrate active intensity interferometry for super-resolution imaging over the kilometer range. Our scheme exploits phase-independent multiple laser emitters to produce the thermal illumination and uses an elaborate computational algorithm to reconstruct the image. In outdoor environments, we image two-dimension millimeter-level targets over 1.36 kilometers at a resolution of 14 times the diffraction limit of a single telescope. High-resolution optical imaging and sensing are anticipated by applying long-baseline active intensity interferometry in general branches of physics and metrology.
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