The linear canonical transform (LCT) is a versatile integral transform that generalises classical transforms such as the Fourier, fractional Fourier, and Fresnel transforms. By utilising four ...

A new algorithm performs Fourier transforms using a minimal number of samples. The fast Fourier transform, one of the most important algorithms of the 20th century, revolutionized signal processing.

A high-performance ‘photonic transistor’ that switches light signals instead of electronic signals could revolutionize optical signal processing. Electronic transistors, which act as miniature ...