---
OA_place: publisher
_id: '9920'
abstract:
- lang: eng
  text: 'This work is concerned with two fascinating circuit quantum electrodynamics
    components, the Josephson junction and the geometric superinductor, and the interesting
    experiments that can be done by combining the two. The Josephson junction has
    revolutionized the field of superconducting circuits as a non-linear dissipation-less
    circuit element and is used in almost all superconducting qubit implementations
    since the 90s. On the other hand, the superinductor is a relatively new circuit
    element introduced as a key component of the fluxonium qubit in 2009. This is
    an inductor with characteristic impedance larger than the resistance quantum and
    self-resonance frequency in the GHz regime. The combination of these two elements
    can occur in two fundamental ways: in parallel and in series. When connected in
    parallel the two create the fluxonium qubit, a loop with large inductance and
    a rich energy spectrum reliant on quantum tunneling. On the other hand placing
    the two elements in series aids with the measurement of the IV curve of a single
    Josephson junction in a high impedance environment. In this limit theory predicts
    that the junction will behave as its dual element: the phase-slip junction. While
    the Josephson junction acts as a non-linear inductor the phase-slip junction has
    the behavior of a non-linear capacitance and can be used to measure new Josephson
    junction phenomena, namely Coulomb blockade of Cooper pairs and phase-locked Bloch
    oscillations. The latter experiment allows for a direct link between frequency
    and current which is an elusive connection in quantum metrology. This work introduces
    the geometric superinductor, a superconducting circuit element where the high
    inductance is due to the geometry rather than the material properties of the superconductor,
    realized from a highly miniaturized superconducting planar coil. These structures
    will be described and characterized as resonators and qubit inductors and progress
    towards the measurement of phase-locked Bloch oscillations will be presented.'
acknowledged_ssus:
- _id: NanoFab
- _id: M-Shop
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Matilda
  full_name: Peruzzo, Matilda
  id: 3F920B30-F248-11E8-B48F-1D18A9856A87
  last_name: Peruzzo
  orcid: 0000-0002-3415-4628
citation:
  ama: Peruzzo M. Geometric superinductors and their applications in circuit quantum
    electrodynamics. 2021. doi:<a href="https://doi.org/10.15479/at:ista:9920">10.15479/at:ista:9920</a>
  apa: Peruzzo, M. (2021). <i>Geometric superinductors and their applications in circuit
    quantum electrodynamics</i>. Institute of Science and Technology Austria. <a href="https://doi.org/10.15479/at:ista:9920">https://doi.org/10.15479/at:ista:9920</a>
  chicago: Peruzzo, Matilda. “Geometric Superinductors and Their Applications in Circuit
    Quantum Electrodynamics.” Institute of Science and Technology Austria, 2021. <a
    href="https://doi.org/10.15479/at:ista:9920">https://doi.org/10.15479/at:ista:9920</a>.
  ieee: M. Peruzzo, “Geometric superinductors and their applications in circuit quantum
    electrodynamics,” Institute of Science and Technology Austria, 2021.
  ista: Peruzzo M. 2021. Geometric superinductors and their applications in circuit
    quantum electrodynamics. Institute of Science and Technology Austria.
  mla: Peruzzo, Matilda. <i>Geometric Superinductors and Their Applications in Circuit
    Quantum Electrodynamics</i>. Institute of Science and Technology Austria, 2021,
    doi:<a href="https://doi.org/10.15479/at:ista:9920">10.15479/at:ista:9920</a>.
  short: M. Peruzzo, Geometric Superinductors and Their Applications in Circuit Quantum
    Electrodynamics, Institute of Science and Technology Austria, 2021.
corr_author: '1'
date_created: 2021-08-16T09:44:09Z
date_published: 2021-08-19T00:00:00Z
date_updated: 2026-04-15T06:43:02Z
day: '19'
ddc:
- '539'
degree_awarded: PhD
department:
- _id: GradSch
- _id: JoFi
doi: 10.15479/at:ista:9920
file:
- access_level: closed
  checksum: 3cd1986efde5121d7581f6fcf9090da8
  content_type: application/x-zip-compressed
  creator: mperuzzo
  date_created: 2021-08-16T09:33:21Z
  date_updated: 2021-09-06T08:39:47Z
  file_id: '9924'
  file_name: GeometricSuperinductorsForCQED.zip
  file_size: 151387283
  relation: source_file
- access_level: open_access
  checksum: 50928c621cdf0775d7a5906b9dc8602c
  content_type: application/pdf
  creator: mperuzzo
  date_created: 2021-08-18T14:20:06Z
  date_updated: 2021-09-06T08:39:47Z
  file_id: '9939'
  file_name: GeometricSuperinductorsAndTheirApplicationsIncQED-1b.pdf
  file_size: 17596344
  relation: main_file
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  content_type: application/pdf
  creator: mperuzzo
  date_created: 2021-08-18T14:20:09Z
  date_updated: 2021-09-06T08:39:47Z
  description: Extra copy of the thesis as PDF/A-2b
  file_id: '9940'
  file_name: GeometricSuperinductorsAndTheirApplicationsIncQED-2b.pdf
  file_size: 17592425
  relation: other
file_date_updated: 2021-09-06T08:39:47Z
has_accepted_license: '1'
keyword:
- quantum computing
- superinductor
- quantum metrology
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
page: '149'
publication_identifier:
  isbn:
  - 978-3-99078-013-8
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '9928'
    relation: part_of_dissertation
    status: public
  - id: '8755'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Johannes M
  full_name: Fink, Johannes M
  id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
  last_name: Fink
  orcid: 0000-0001-8112-028X
title: Geometric superinductors and their applications in circuit quantum electrodynamics
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2021'
...