Study of Low-loss Crystals and Microwave Reentrant Cavities for Hybrid Quantum Devices

This thesis undertakes new investigations with respect to hybrid systems that interacts microwave radiation with spin and phonons. In this work, YSO and YAP samples had their permittivity tensor characterized with YAP subjected to an electron spin resonance spectroscopy. Furthermore, reentrant cavities were explored to promote the interaction of photons with different physical systems. Hence, a piezoelectric controlled cavity was developed and upgraded to a superconducting tunable device and a parametric transducer based on optomechanical coupling was tested. Finally, an optoacoustic device was built allowing the coupling between photons and phonons in a quartz bulk acoustic wave resonator.