ESPCI web site
Thursday December 4 at 2:00 pm (Paris time)
Room Boreau, building C, 2nd floor, 10 rue Vauquelin, ESPCI
Building up coupled systems out of quantum emitters in low dimensional materials
For the past two decades quantum emitters have been intensively studied to develop bright, pure and on-demand single photon sources as building blocks for quantum cryptography and computing. The now achievable high control of a single quantum emitter naturally paves the path to the development of coupled systems which would arise from quantum emitters close to each other, up to their arrangement in array with controlled symmetry, where collective effects such as super-fluorescence or super-radiance is expected1,2. To this extent, quantum emitters in low dimensional materials offer an exciting playground as some nanofabrication techniques enables their implantation with a nanometric precision, via chemical functionalisation, electron or ion irradiation or 2D moiré heterostructures. In this talk, I will present the case of quantum emitters unintentionally embedded in a carbon nanotube via chemical functionalisation close enough to each other to display some coupling3, before discussing the optical control of quantum emitters located in a 2D moiré array through a quasi-resonant process involving exciton-phonon coupling4,5.
1. Rainò, G. et al. Superfluorescence from lead halide perovskite quantum dot superlattices. Nature 563, 671–675 (2018).
2. Kim, J.-H., A et al. E. Super-Radiant Emission from Quantum Dots in a Nanophotonic Waveguide. Nano Lett. 18, 4734–4740 (2018).
3. Borel, A., et al. Luminescence Properties of Closely Packed Organic Color Centers Grafted on a Carbon Nanotube. Nano Lett. 24, 3456–3461 (2024).
4. Campbell, A. J. et al. The interplay of field-tunable strongly correlated states in a multi-orbital moiré system. Nat. Phys. 20, 589–596 (2024).
5. Borel, A. et al. Photoexcitation of moiré-trapped interlayer excitons via chiral phonons, in preparation
