Abstract
In this thesis, the microwave detection of mechanically compliant objects is investigated. This starts with a system of a suspended metal drum capacitively coupled to a high impedance microstrip resonator. The mechanical non-linear dissipation of the drums is studied. Next, a suspended nanowire coupled to a CPW resonator is studied. With an electrostatic drive at twice the mechanical resonance frequency, there occurs a parametric excitation of either the mechanical signal or the coupled microwave resonance frequency of the cavity. Then the microwave loss in flux-tunable resonators is investigated for future experiments. One of the goals of this project was to couple a suspended nanowire with a SQUID loop of a flux tunable cavity. Here, the dielectric loss in flux tunable resonators is studied in order to optimize the design of future devices.
Original language | English |
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Awarding Institution |
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Supervisors/Advisors |
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Award date | 28 Nov 2018 |
Print ISBNs | 978.90.8593.376.2 |
DOIs | |
Publication status | Published - 2018 |
Keywords
- mechanical oscillators
- parametric excitation
- Josephson junctions
- SQUIDs
- TLSs
- cavity optomechanics
- nanotechnology