Front Cover: Positional Accuracy of 3D Printed Quantum Emitter Fiber Couplers (Adv. Quantum Technol. 11/2024)

The cover image depicts coupling of the light emission of single quantum emitters to single mode fibers. 3D printed microoptics are used to create the aspheric optics that matches the numerical apertures of light emission cone and fibers to each other. Additionally, a 3D printed chuck is used to place the fiber in the correct distance and with the correct horizontal alignment over the quantum emitters. The article by Harald Giessen and co‐workers (article number 2400135) describes the quantification of the alignment accuracy and reproducibility of such 3D printed couplers. [Cover image: © Florian Sterl, Sterltech Optics.]