Hetero-structured silicon, 2D materials and nanowire-based devices for quantum photonics.

Cornia S., Cammarata S., Kaplan E., Demontis V., Vitali V., Fontana A., Lacava1 C., Rossella F., Salamon A., Bellani V.
  Lunedì 12/09   14:00 - 19:00   Aula D - Marianna Ciccone   II - Fisica della materia   Presentazione
We are developing integrated silicon photonic devices heterostructures with two-dimensional (2D) topological materials and semiconductor nanowires (NWs), for integrated quantum optics with single/few photons manipulation. Two- and one-dimensional materials are under development for topological photonics; to this respect, we fabricated and studied heterostructures with silicon and graphene, hexagonal boron nitride and III-V semiconductor. 2D materials are prepared by means of micro-mechanical cleavage and chemical vapor deposition, while high-quality NWs can be grown resorting to epitaxial techniques. Our platform envisions 2D materials and NWs placed on the silicon structures by micro manipulation transfer and drop casting techniques. The materials and devices are studied using several techniques including scanning electron microscopy, photoluminescence, elastic/inelastic light scattering and electrical transport. We use analytical and numerical methods in order to design the devices and predict and analyse the experimental results. Our combined experimental and theoretical goal is the development of new paradigms of single/few photon sources and the generation and study of novel quantum states.