Visualizing Quantum States in 2D Materials

Scientists have developed a new approach to create separate images of individual quantum states in two-dimensional crystals of tungsten disulfide (WS2) using a technique called time-resolved momentum microscopy. By tracking the individual quantum states, researchers showed that the coupling mechanisms that lead to mixing of the states may not fully match current theories. This study provides crucial experimental support for some current theories of exciton coupling in TMDs, but also sheds light on important discrepancies.