Twisted light for quantum control of Rydberg EXcitons
Research project selected under the 2023 call for proposals
Principal Investigator : Thomas BOULIER
Involved Teams :
- LPCNO / Opto
Type of project : Disruptive Project
Date (start/end) : 2023 – 2026
This experimental project proposes to use twisted light carrying a quantized orbital angular momentum, such as Laguerre-Gauss beams, to engineer new optical selection rules in a semiconductor system. In particular, in copper oxide (Cu2O), excitons with a giant hydrogen-like wavefunction (called Rydberg excitons) are the perfect platform to test this new type of engineering due to the good overlap of a single Rydberg exciton with twisted laser modes.
This project is doubly important: (1) because this has never been achieved in any type of system so far and would answer the fundamental question “can the orbital angular momentum of light drive an electronic dipole transition?” and (2) because this would be a new method to unlock previously-inaccessible Rydberg excitons states, with considerable potential for solid-state quantum technologies.