Extended Data Fig. 1: Imaging system for the fluorescence detection of individual ion-qubit states.
From: Scalable and programmable phononic network with trapped ions

The fluorescence of five ions is collected by a high NA lens and imaged to 32-channel PMT. To reduce crosstalk, we image each ion into alternative channels of PMT and put a slit at the second focused plane of the imaging system to suppress horizontal and vertical components, respectively.