Ultrafast Control of Excitonic Rashba Fine Structure by Phonon Coherences in a Metal Halide Perovskite CH${}_3$NH${}_3$PbI${}_3$

Z. Liu, C. Vaswani, X. Yang +14

We discover hidden Rashba fine structure in CH${}_3$NH${}_3$PbI${}_3$ and demonstrate its quantum control by vibrational coherence through symmetry-selective vibronic (electron-phonon) c…