Incorporation and characterization of silicon vacancies in silicon carbide photonic crystal cavities

• Grant number: 22/13615-2
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate (Direct)
• Start date: February 28, 2023
• End date: December 27, 2023
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Cleber Renato Mendonça
• Grantee: Filipe Assis Couto
• Supervisor: Evelyn Hu
• Host Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Institution abroad: Harvard University, United States
• Associated to the scholarship: 20/08715-2 - Fabrication of polymeric micro-resonators with nanodiamonds for quantum information technologies, BP.DD

Abstract

The integration of quantum emitters into photonic cavities has been agreat platform for studies in quantum technologies. When the modes of thecavities are resonant with the emitter, the emission rate can be greatly in-creased, paving the way for many experiments in quantum information. In thiscontext, silicon carbide (SiC) is a material of interest, since it is a technologicallymature semiconductor that hosts a variety of point defects, which can act asquantum emitters. Also, the fabrication process in this material is better knownthan in other color center materials, such as diamond, allowing for the fabrica-tion of photonic structures. In particular, 1D photonic crystals have been used toconfine and enhance the emission of many color centers in SiC. In this intern-ship, we will study the incorporation of Silicon Vacancies (SiV) via laser irradia-tion directly into optical cavities fabricated in 4H SiC, and characterize theiremission properties. The host group of prof. Evelyn Hu has vast experience instudying color centers integrated into photonic cavities, and is currently carryingout promising research incorporating SiV direct into photonic crystal cavities,which will certainty contribute to the development of experiments in our group inBrazil, where we are studying NV color centers in diamond integrated into cylin-drical microresonators. (AU)