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Enabling waveguide-cavity scattering for microwave-to-optical transduction

Grant number: 23/00058-0
Support Opportunities:Scholarships abroad - Research Internship - Doctorate (Direct)
Effective date (Start): May 01, 2023
Effective date (End): December 31, 2023
Field of knowledge:Physical Sciences and Mathematics - Physics - Condensed Matter Physics
Principal Investigator:Thiago Pedro Mayer Alegre
Grantee:André Garcia Primo
Supervisor: Amir Safavi-Naeini
Host Institution: Instituto de Física Gleb Wataghin (IFGW). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
Research place: Stanford University, United States  
Associated to the scholarship:19/09738-9 - Near strong coupling optomechanical cavities, BP.DD


The coherent transduction of information between microwave and optical domains is a fundamental building block for future quantum networks. A promising way to bridge these widely different frequencies is using high-frequency nanomechanical resonators interacting with low-loss optical modes. Current experiments require a relatively large photon population in the cavity to enhance the acousto-optic coupling, hindering the efficient quantum operation of devices due to the heat generated from optical absorption. One of the ways to mitigate this problem is by using dissipative optomechanics. In this framework, photons can be scattered directly from a waveguide into a resonator, reducing the necessity of large in-cavity fields. Here, we propose a novel method to engineer a dissipative optomechanical system to greatly suppress the intracavity field, while still benefiting from mechanical scattering. (AU)

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