Abstract
This thesis explores the coupling of microwave cavities containing a Superconducting QUantum Interference Device (SQUID) to a mechanical resonator by means of a flux-mediated optomechanical coupling scheme, and to a Radio-Frequency (RF) circuit via a photon-pressure interaction. While flux-mediated optomechanical systems open the door for the exploration of optomechanical single-photon effects, ultimately allowing for the generation of non-classical states in mechanical oscillators and for the creation of optomechanical qubits, the realization of photon-pressure systems brings rich possibilities for quantum-limited sensing and quantum signal processing, representing a first step towards radio-frequency quantum photonics. Besides presenting the experimental work done with the systems described above, this thesis also provides a theoretical description of their working principle, details on their fabrication, and insights on maximizing their single-photon coupling strengths as well as an overview of the experimental challenges associated with SQUID cavities.
| Original language | English |
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| Qualification | Doctor of Philosophy |
| Awarding Institution |
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| Supervisors/Advisors |
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| Award date | 25 May 2021 |
| Print ISBNs | 978-90-8593-474-5 |
| Electronic ISBNs | 978-90-8593-474-5 |
| DOIs | |
| Publication status | Published - 2021 |
Keywords
- SQUID cavities
- Optomechanics
- Superconducting circuits
- Photon-pressure coupling