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dc.contributor.author
Oswald, Robin
dc.contributor.supervisor
Home, Jonathan
dc.contributor.supervisor
Leibrandt, David
dc.date.accessioned
2023-03-17T14:31:09Z
dc.date.available
2023-03-17T11:26:33Z
dc.date.available
2023-03-17T14:31:09Z
dc.date.issued
2022
dc.identifier.uri
http://hdl.handle.net/20.500.11850/603723
dc.identifier.doi
10.3929/ethz-b-000603723
dc.description.abstract
Trapped ions are one of the leading approaches to build quantum computers. The required building blocks have all been demonstrated with high fidelity, recently culminating in elementary demonstrations of quantum error correction. The main challenge now is to scale up current-day systems without increasing the errors, but reducing them instead. The first part of this thesis is concerned with technical challenges faced when scaling up trapped-ion systems. We therefore present the design of a cryogenic ion trap setup and use it to evaluate new technological approaches. We perform a detailed characterization of the apparatus to identify its main limiting factors and to uncover unknown unknowns. The second part of this thesis is concerned with the use of feedback control, primarily for laser stabilization. We explore its benefits but also associated challenges and fundamental limitations in a number of scenarios motivated by the experimental apparatus and its characterization. A common theme in the latter is the occurrence of noise at discrete frequencies or confined to narrow frequency bands. We therefore investigate how to tailor feedback control loops to be particularly effective at these frequencies by incorporating resonant elements into the controller. The presentation in the second part is kept general enough such that it can serve as a reference on feedback control for a broad audience within atomic, molecular and optical physics. The goal is to provide a map of the control engineering literature to help physicists navigate the landscape, ultimately leading to better experiments.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
ETH Zurich
en_US
dc.rights.uri
http://rightsstatements.org/page/InC-NC/1.0/
dc.subject
Quantum computing
en_US
dc.subject
Feedback control
en_US
dc.subject
Laser stabilization
en_US
dc.subject
Ion trap
en_US
dc.subject
Quantum physics
en_US
dc.subject
Atomic physics
en_US
dc.subject
Quantum information
en_US
dc.title
Characterization and control of a cryogenic ion trap apparatus and laser systems for quantum computing
en_US
dc.type
Doctoral Thesis
dc.rights.license
In Copyright - Non-Commercial Use Permitted
dc.date.published
2023-03-17
ethz.size
349 p.
en_US
ethz.code.ddc
DDC - DDC::5 - Science::530 - Physics
en_US
ethz.code.ddc
DDC - DDC::6 - Technology, medicine and applied sciences::600 - Technology (applied sciences)
en_US
ethz.identifier.diss
28673
en_US
ethz.publication.place
Zurich
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02010 - Dep. Physik / Dep. of Physics::02510 - Institut für Quantenelektronik / Institute for Quantum Electronics::03892 - Home, Jonathan / Home, Jonathan
en_US
ethz.date.deposited
2023-03-17T11:26:33Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2023-03-17T14:31:10Z
ethz.rosetta.lastUpdated
2024-02-02T21:08:07Z
ethz.rosetta.versionExported
true
ethz.COinS
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