Super-resolution imaging using the spatial-frequency filtered intensity fluctuation correlation

TL;DR

This paper demonstrates a super-resolution imaging technique using intensity fluctuation correlation of thermal light, enabling image recovery beyond the Rayleigh limit even with a blurred classical image, with potential applications in long-distance imaging.

Contribution

The paper introduces a nonclassical imaging method that surpasses traditional resolution limits by exploiting spatial-frequency filtered intensity fluctuations.

Findings

Achieved super-resolution imaging beyond Rayleigh limit.

Successfully recovered images with a small lens using fluctuation correlation.

Potential for long-distance applications like satellite imaging.

Abstract

We report an experimental demonstration of a nonclassical imaging mechanism with super-resolving power beyond the Rayleigh limit. When the classical image is completely blurred out due to the use of a small imaging lens, by taking advantage of the intensity fluctuation correlation of thermal light, the demonstrated camera recovered the image of the resolution testing gauge. This method could be adapted to long distance imaging, such as satellite imaging, which requires large diameter camera lenses to achieve high image resolution.