Signal processing is of critical importance for various science and technology fields. Analog
optical processing can provide an effective solution to perform large-scale and real-time …

Optical metasurfaces have enabled analog computing and image processing within sub-
wavelength footprints, and with reduced power consumption and faster speeds. While …

Spatial optical analog differentiation allows ultrahigh-speed and low-power-consumption of
image processing, as well as label-free imaging of transparent biological objects. Optical …

Chiroptical metamaterials have attracted considerable attention owing to their exciting
opportunities for fundamental research and practical applications over the past 20 years …

Analog computation with passive optical components can enhance processing speeds and
reduce power consumption, recently attracting renewed interest thanks to the opportunities …

Spiral phase contrast imaging alleviates the information load by extracting the geometric
features of objects and is one of the most representative branches of instant imaging …

Optical metasurfaces provide a prospective platform for analog image processing. Recently,
they have been used for applications such as denoising and edge enhancement, but their …

Nonlocal metasurfaces have recently enabled an ultra-compact, low-power and high-speed
platform to perform analog image processing. While several computational tasks have been …

Metasurfaces provide excellent design flexibility, allowing for the creation of versatile
integrated designs with significant potential for practical applications. This paper proposes a …

In recent years, due to the increasing requirement for real-time and massive data
processing, optical analog computation has arisen as a promising alternative to digital …