Dissipative and dispersive optomechanical cavities

• Grant number: 22/14273-8
• Support Opportunities: Regular Research Grants
• Start date: March 01, 2023
• End date: August 31, 2024
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Agreement: Delft University of Technology
• Mobility Program: SPRINT - Projetos de pesquisa - Mobilidade
• Principal Investigator: Thiago Pedro Mayer Alegre
• Grantee: Thiago Pedro Mayer Alegre
• Principal researcher abroad: Simon Groeblacher
• Institution abroad: Delft University of Technology (TU Delft) , Netherlands
• Host Institution: Instituto de Física Gleb Wataghin (IFGW). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• City of the host institution: Campinas
• Associated research grant: 18/15580-6 - Optomechanical cavities towards single photon strong coupling, AP.JP2

Abstract

Traditionally most reports on cavity optomechanics to date rely on dispersively coupled optical and acoustic modes optomechanical experiments. However, a complete description of the optomechanical interaction must take into account a dissipative coupling, where the mechanical displacement modulates the optical mode linewidth. In this project, we explore new device designs and experiments that will be used to test dissipative couplings and will allow to extend such an approach for realizing an optomechanical exceptional point, where both modes coalesce into a single mode leading to enhanced position detection sensitivity. (AU)