Controlling excitons like never before
Excitons hold great importance because they help us understand how light and energy move through materials, especially in technologies like solar cells, LEDs, and quantum computers. The study authors performed an interesting experiment to examine their behavior inside CrSBr.
They used ultra-short laser pulses lasting just 20 quadrillionths of a second (20 x 10-15 seconds) to create excitons inside CrSBr. Then, they used a second laser to push the excitons gently into slightly higher energy states.