Back Cover: Quantum Imaging Exploiting Twisted Photon Pairs (Adv. Quantum Technol. 5/2023)

Twisted photon pairs have been exploited for quantum correlated imaging. Due to the destructive interference between the anti‐bunched and bunched photons, only the donut structure of twisted photons can be observed in a photon‐number density measurement. The image of the target imprinted on the phase of photons is obtained from the coincidence signal of the two output channels. More details can be found in article number 2300037 by Dianzhen Cui, Xuexi Yi, and Li‐Ping Yang.