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This thesis describes the design, fabrication, and characterization of 3D superconducting microwave cavities for two applications. It first describes a cryogenically compatible microwave filter that is able to tune its resonant frequency by an unprecedented 5 GHz via deformation caused by a a...
Cavity optomechanical devices are interesting systems for probing quantum mechanical behaviour of mesoscopic objects. A basic requirement for these types of experiments is preparation of the mechanical resonator in, or at least very close to, its ground state. Although active laser cooling...
Coupling optical cavities to freely moving mechanical devices results in optomechanical systems. Enabled by advancing fabrication techniques, optomechanical systems are now easily fabricated using silicon-on-insulator chips at the micro- and nanoscale. These nano-optomechanical systems (NOMS)...
Optomechanics, the sensing of mechanical movement using optical modes, has seen great advancement in recent years and has been used for its high displacement sensitivity to couple to a variety of mechanical devices. Torsional devices have historically been used for measuring de Haas-van Alphen...
Wavelength transduction of light, specifically between the microwave and telecom regimes, has received a great deal of attention from the cavity optomechanics community as a landmark application for optomechanical systems. Mechanical systems are uniquely suited to wavelength transduction, as...
Torsional oscillators are well known for their extensive applications ranging from measuring gravity to detecting angular momentum of light. When these torsional resonators scale down, through advanced nanofabrication techniques, the applications extend to measuring quantum effects such as the...