Abstract
Quantum confinement of Rydberg excitons is an important step towards exploiting their large nonlinearities for quantum applications. We observe Rydberg excitons in synthetic as well as natural nanoparticles of Cu2O. While we can resolve up to n = 12 in bulk Cu2O, only resonances up to n = 5 are distinguished in nanoparticles. Due to confinement the exciton transitions in nanoparticles broaden by nearly two folds and the oscillator strength decreases as n-4 compared to those in the bulk (decreasing as ∝ n-3). Our results demonstrate the fragile nature of Rydberg excitons in confined dimensions.
Original language | English |
---|---|
Number of pages | 8 |
Journal | ArXiv e-prints |
Publication status | Published - 24 Nov 2020 |