Leveraging magneto-mechanics for clamped and levitated mechanics - Mathieu Juan

Optomechanical interactions in the microwave regime has been a very active field of research, leveraging advanced micro-fabrication techniques with the large non-linearities enabled by circuits to reach regimes difficult to access in the optical regime. In this context, the interaction between the mechanical system and the circuit is realized through a change in the capacitance or the inductance. While more recent, large interactions have been demonstrated with the inductive approach, providing a promising avenue towards the strong coupling regime. This approach relies on a flux sensitive microwave resonator coupled to a mechanical mode via a magnetic field.
In this presentation, I will discuss our group's progress in developing magneto-mechanical systems with both clamped and levitated resonators. Our methodology, developed in Innsbruck, relies on distinct chips for the mechanical resonator and the circuit, enabling independent optimization of each component. We have been working on the micro-fabrication of magnets to further increase the magneto-mechanical coupling of silicon-nitride membranes. In parallel, we are also developing a levitation setup based on Paul traps allowing us to directly couple the mechanical resonator to the superconducting circuit. While still in its early stages, our approach shows promise for applications in precision sensing and fundamental quantum science.


The event is sponsored by Quantum City.