Two-Dimensional Excitons from Twisted Light and the Fate of the Photon's Orbital Angular Momentum

Phys. Rev. B 105, 205202 (2022)https://ireap.umd.edu/10.1103/PhysRevB.105.2052022022Journal ArticleNonlinear and Quantum Photonics

As the bound state of two oppositely charged particles, excitons emerge from optically excited semiconductors as the electronic analog of a hydrogen atom.