A high beam brightness of 1.6×107 W sr−1m−2 with near-diffraction-limited M2 factors of 1.4 in both vertical and lateral directions is achieved from a large device area of 1.6×1.6 mm2 without using any optical lenses.

Recently, the group led by Professor Nanlin Wang from the Beijing Academy of Quantum Information Sci

Exploration of exotic quantum phase transitions has always been a focus in condensed matter physics.

Currently, there is no ideal solution for the crystal alignment in the welding of two-dimensional se