Bringing classical mechanical resonators towards the quantum regime: A journey on developing integrated optomechanical devices and exploring experiments at high temperature

The work in this thesis focuses on potential ways to bring a macroscopic mechanical<br/>resonator in a classical environment into the quantum regime with integrated cavity<br/>optomechanics...

Freestanding 2D Materials and their Applications: From Lab to Fab

Making light jump: Photonic crystals on trampoline membranes for optomechanics experiments

Cavity optomechanics studies the interaction between mechanical resonators and optical cavities through radiation pressure forces and aims to harness this interaction for applications in the areas of high precision metrology, tests of fundamental quantum mechanics, or quantum information processing. For the most ambitious of these applications...

High-quality-factor tantalum oxide nanomechanical resonators by laser oxidation of TaSe2

Controlling the strain in two-dimensional (2D) materials is an interesting avenue to tailor the mechanical properties of nanoelectromechanical systems. Here, we demonstrate a technique to fabricate ultrathin tantalum oxide nanomechanical resonators with large stress by the laser oxidation of nano-drumhead resonators composed of tantalum...

Mechanical resonance properties of porous graphene membrane; simulation study and proof of concept experiment

Mechanical resonance properties of porous graphene resonators were investigated by simulation studies. The finite element method was utilized to design the porous graphene membrane pattern and to calculate the mechanical resonance frequency and quality factor. The changes in the resonance frequency and quality factor were systematically...

Integrated optomechanical arrays of two high reflectivity SiN membranes

Multielement cavity optomechanics constitutes a direction to observe novel effects with mechanical resonators. Several exciting ideas include superradiance, increased optomechanical coupling, and quantum effects between distinct mechanical modes among others. Realizing these experiments has so far been difficult, because of the need for...