---
_id: '13175'
abstract:
- lang: eng
  text: "About a 100 years ago, we discovered that our universe is inherently noisy,
    that is, measuring any physical quantity with a precision beyond a certain point
    is not possible because of an omnipresent inherent noise. We call this - the quantum
    noise. Certain physical processes allow this quantum noise to get correlated in
    conjugate physical variables. These quantum correlations can be used to go beyond
    the potential of our inherently noisy universe and obtain a quantum advantage
    over the classical applications. \r\n\r\nQuantum noise being inherent also means
    that, at the fundamental level, the physical quantities are not well defined and
    therefore, objects can stay in multiple states at the same time. For example,
    the position of a particle not being well defined means that the particle is in
    multiple positions at the same time. About 4 decades ago, we started exploring
    the possibility of using objects which can be in multiple states at the same time
    to increase the dimensionality in computation. Thus, the field of quantum computing
    was born. We discovered that using quantum entanglement, a property closely related
    to quantum correlations, can be used to speed up computation of certain problems,
    such as factorisation of large numbers, faster than any known classical algorithm.
    Thus began the pursuit to make quantum computers a reality. \r\n\r\nTill date,
    we have explored quantum control over many physical systems including photons,
    spins, atoms, ions and even simple circuits made up of superconducting material.
    However, there persists one ubiquitous theme. The more readily a system interacts
    with an external field or matter, the more easily we can control it. But this
    also means that such a system can easily interact with a noisy environment and
    quickly lose its coherence. Consequently, such systems like electron spins need
    to be protected from the environment to ensure the longevity of their coherence.
    Other systems like nuclear spins are naturally protected as they do not interact
    easily with the environment. But, due to the same reason, it is harder to interact
    with such systems. \r\n\r\nAfter decades of experimentation with various systems,
    we are convinced that no one type of quantum system would be the best for all
    the quantum applications. We would need hybrid systems which are all interconnected
    - much like the current internet where all sorts of devices can all talk to each
    other - but now for quantum devices. A quantum internet. \r\n\r\nOptical photons
    are the best contenders to carry information for the quantum internet. They can
    carry quantum information cheaply and without much loss - the same reasons which
    has made them the backbone of our current internet. Following this direction,
    many systems, like trapped ions, have already demonstrated successful quantum
    links over a large distances using optical photons. However, some of the most
    promising contenders for quantum computing which are based on microwave frequencies
    have been left behind. This is because high energy optical photons can adversely
    affect fragile low-energy microwave systems. \r\n\r\nIn this thesis, we present
    substantial progress on this missing quantum link between microwave and optics
    using electrooptical nonlinearities in lithium niobate. The nonlinearities are
    enhanced by using resonant cavities for all the involved modes leading to observation
    of strong direct coupling between optical and microwave frequencies. With this
    strong coupling we are not only able to achieve almost 100\\% internal conversion
    efficiency with low added noise, thus presenting a quantum-enabled transducer,
    but also we are able to observe novel effects such as cooling of a microwave mode
    using optics. The strong coupling regime also leads to direct observation of dynamical
    backaction effect between microwave and optical frequencies which are studied
    in detail here. Finally, we also report first observation of microwave-optics
    entanglement in form of two-mode squeezed vacuum squeezed 0.7dB below vacuum level.
    \r\nWith this new bridge between microwave and optics, the microwave-based quantum
    technologies can finally be a part of a quantum network which is based on optical
    photons - putting us one step closer to a future with quantum internet. "
acknowledged_ssus:
- _id: M-Shop
- _id: SSU
- _id: NanoFab
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Rishabh
  full_name: Sahu, Rishabh
  id: 47D26E34-F248-11E8-B48F-1D18A9856A87
  last_name: Sahu
  orcid: 0000-0001-6264-2162
citation:
  ama: Sahu R. Cavity quantum electrooptics. 2023. doi:<a href="https://doi.org/10.15479/at:ista:13175">10.15479/at:ista:13175</a>
  apa: Sahu, R. (2023). <i>Cavity quantum electrooptics</i>. Institute of Science
    and Technology Austria. <a href="https://doi.org/10.15479/at:ista:13175">https://doi.org/10.15479/at:ista:13175</a>
  chicago: Sahu, Rishabh. “Cavity Quantum Electrooptics.” Institute of Science and
    Technology Austria, 2023. <a href="https://doi.org/10.15479/at:ista:13175">https://doi.org/10.15479/at:ista:13175</a>.
  ieee: R. Sahu, “Cavity quantum electrooptics,” Institute of Science and Technology
    Austria, 2023.
  ista: Sahu R. 2023. Cavity quantum electrooptics. Institute of Science and Technology
    Austria.
  mla: Sahu, Rishabh. <i>Cavity Quantum Electrooptics</i>. Institute of Science and
    Technology Austria, 2023, doi:<a href="https://doi.org/10.15479/at:ista:13175">10.15479/at:ista:13175</a>.
  short: R. Sahu, Cavity Quantum Electrooptics, Institute of Science and Technology
    Austria, 2023.
date_created: 2023-06-30T08:07:43Z
date_published: 2023-05-05T00:00:00Z
date_updated: 2024-10-29T09:11:06Z
day: '05'
ddc:
- '537'
- '535'
- '539'
degree_awarded: PhD
department:
- _id: GradSch
- _id: JoFi
doi: 10.15479/at:ista:13175
ec_funded: 1
file:
- access_level: open_access
  checksum: 7d03f1a5a5258ee43dfc3323dea4e08f
  content_type: application/pdf
  creator: cchlebak
  date_created: 2023-06-30T08:17:25Z
  date_updated: 2023-06-30T08:17:25Z
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  creator: cchlebak
  date_created: 2023-07-06T11:35:15Z
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  file_name: thesis.zip
  file_size: 37847025
  relation: source_file
file_date_updated: 2023-07-06T11:35:15Z
has_accepted_license: '1'
keyword:
- quantum optics
- electrooptics
- quantum networks
- quantum communication
- transduction
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
page: '202'
project:
- _id: 26336814-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '758053'
  name: A Fiber Optic Transceiver for Superconducting Qubits
- _id: 9B868D20-BA93-11EA-9121-9846C619BF3A
  call_identifier: H2020
  grant_number: '899354'
  name: Quantum Local Area Networks with Superconducting Qubits
- _id: bdb108fd-d553-11ed-ba76-83dc74a9864f
  name: QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration
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publication_identifier:
  isbn:
  - 978-3-99078-030-5
  issn:
  - 2663 - 337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
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    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: Cavity quantum electrooptics
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_id: '12900'
abstract:
- lang: eng
  text: "About a 100 years ago, we discovered that our universe is inherently noisy,
    that is, measuring any physical quantity with a precision beyond a certain point
    is not possible because of an omnipresent inherent noise. We call this - the quantum
    noise. Certain physical processes allow this quantum noise to get correlated in
    conjugate physical variables. These quantum correlations can be used to go beyond
    the potential of our inherently noisy universe and obtain a quantum advantage
    over the classical applications. \r\n\r\nQuantum noise being inherent also means
    that, at the fundamental level, the physical quantities are not well defined and
    therefore, objects can stay in multiple states at the same time. For example,
    the position of a particle not being well defined means that the particle is in
    multiple positions at the same time. About 4 decades ago, we started exploring
    the possibility of using objects which can be in multiple states at the same time
    to increase the dimensionality in computation. Thus, the field of quantum computing
    was born. We discovered that using quantum entanglement, a property closely related
    to quantum correlations, can be used to speed up computation of certain problems,
    such as factorisation of large numbers, faster than any known classical algorithm.
    Thus began the pursuit to make quantum computers a reality. \r\n\r\nTill date,
    we have explored quantum control over many physical systems including photons,
    spins, atoms, ions and even simple circuits made up of superconducting material.
    However, there persists one ubiquitous theme. The more readily a system interacts
    with an external field or matter, the more easily we can control it. But this
    also means that such a system can easily interact with a noisy environment and
    quickly lose its coherence. Consequently, such systems like electron spins need
    to be protected from the environment to ensure the longevity of their coherence.
    Other systems like nuclear spins are naturally protected as they do not interact
    easily with the environment. But, due to the same reason, it is harder to interact
    with such systems. \r\n\r\nAfter decades of experimentation with various systems,
    we are convinced that no one type of quantum system would be the best for all
    the quantum applications. We would need hybrid systems which are all interconnected
    - much like the current internet where all sorts of devices can all talk to each
    other - but now for quantum devices. A quantum internet. \r\n\r\nOptical photons
    are the best contenders to carry information for the quantum internet. They can
    carry quantum information cheaply and without much loss - the same reasons which
    has made them the backbone of our current internet. Following this direction,
    many systems, like trapped ions, have already demonstrated successful quantum
    links over a large distances using optical photons. However, some of the most
    promising contenders for quantum computing which are based on microwave frequencies
    have been left behind. This is because high energy optical photons can adversely
    affect fragile low-energy microwave systems. \r\n\r\nIn this thesis, we present
    substantial progress on this missing quantum link between microwave and optics
    using electrooptical nonlinearities in lithium niobate. The nonlinearities are
    enhanced by using resonant cavities for all the involved modes leading to observation
    of strong direct coupling between optical and microwave frequencies. With this
    strong coupling we are not only able to achieve almost 100\\% internal conversion
    efficiency with low added noise, thus presenting a quantum-enabled transducer,
    but also we are able to observe novel effects such as cooling of a microwave mode
    using optics. The strong coupling regime also leads to direct observation of dynamical
    backaction effect between microwave and optical frequencies which are studied
    in detail here. Finally, we also report first observation of microwave-optics
    entanglement in form of two-mode squeezed vacuum squeezed 0.7dB below vacuum level.
    \r\nWith this new bridge between microwave and optics, the microwave-based quantum
    technologies can finally be a part of a quantum network which is based on optical
    photons - putting us one step closer to a future with quantum internet. "
acknowledged_ssus:
- _id: M-Shop
- _id: SSU
- _id: NanoFab
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Rishabh
  full_name: Sahu, Rishabh
  id: 47D26E34-F248-11E8-B48F-1D18A9856A87
  last_name: Sahu
  orcid: 0000-0001-6264-2162
citation:
  ama: Sahu R. Cavity quantum electrooptics. 2023. doi:<a href="https://doi.org/10.15479/at:ista:12900">10.15479/at:ista:12900</a>
  apa: Sahu, R. (2023). <i>Cavity quantum electrooptics</i>. Institute of Science
    and Technology Austria. <a href="https://doi.org/10.15479/at:ista:12900">https://doi.org/10.15479/at:ista:12900</a>
  chicago: Sahu, Rishabh. “Cavity Quantum Electrooptics.” Institute of Science and
    Technology Austria, 2023. <a href="https://doi.org/10.15479/at:ista:12900">https://doi.org/10.15479/at:ista:12900</a>.
  ieee: R. Sahu, “Cavity quantum electrooptics,” Institute of Science and Technology
    Austria, 2023.
  ista: Sahu R. 2023. Cavity quantum electrooptics. Institute of Science and Technology
    Austria.
  mla: Sahu, Rishabh. <i>Cavity Quantum Electrooptics</i>. Institute of Science and
    Technology Austria, 2023, doi:<a href="https://doi.org/10.15479/at:ista:12900">10.15479/at:ista:12900</a>.
  short: R. Sahu, Cavity Quantum Electrooptics, Institute of Science and Technology
    Austria, 2023.
date_created: 2023-05-05T11:08:50Z
date_published: 2023-05-05T00:00:00Z
date_updated: 2024-10-29T09:11:05Z
day: '05'
ddc:
- '537'
- '535'
- '539'
degree_awarded: PhD
department:
- _id: GradSch
- _id: JoFi
doi: 10.15479/at:ista:12900
ec_funded: 1
file:
- access_level: closed
  checksum: 8cbdab9c37ee55e591092a6f66b272c4
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  date_created: 2023-05-09T08:45:14Z
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  creator: rsahu
  date_created: 2023-05-09T08:51:17Z
  date_updated: 2023-07-06T11:37:40Z
  file_id: '12929'
  file_name: thesis_pdfa_final.pdf
  file_size: 17501990
  relation: main_file
file_date_updated: 2023-07-06T11:37:40Z
has_accepted_license: '1'
keyword:
- quantum optics
- electrooptics
- quantum networks
- quantum communication
- transduction
language:
- iso: eng
month: '05'
oa_version: Published Version
page: '190'
project:
- _id: 26336814-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '758053'
  name: A Fiber Optic Transceiver for Superconducting Qubits
- _id: 9B868D20-BA93-11EA-9121-9846C619BF3A
  call_identifier: H2020
  grant_number: '899354'
  name: Quantum Local Area Networks with Superconducting Qubits
- _id: bdb108fd-d553-11ed-ba76-83dc74a9864f
  name: QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration
    of Superconducting Quantum Circuits
publication_identifier:
  isbn:
  - 978-3-99078-030-5
  issn:
  - 2663 - 337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '9114'
    relation: part_of_dissertation
    status: public
  - id: '10924'
    relation: part_of_dissertation
    status: public
  - id: '13175'
    relation: new_edition
    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: Cavity quantum electrooptics
tmp:
  image: /images/cc_by_nc_sa.png
  legal_code_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC
    BY-NC-SA 4.0)
  short: CC BY-NC-SA (4.0)
type: dissertation
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2023'
...
---
_id: '12366'
abstract:
- lang: eng
  text: "Recent substantial advances in the feld of superconducting circuits have
    shown its\r\npotential as a leading platform for future quantum computing. In
    contrast to classical\r\ncomputers based on bits that are represented by a single
    binary value, 0 or 1, quantum\r\nbits (or qubits) can be in a superposition of
    both. Thus, quantum computers can store\r\nand handle more information at the
    same time and a quantum advantage has already\r\nbeen demonstrated for two types
    of computational tasks. Rapid progress in academic\r\nand industry labs accelerates
    the development of superconducting processors which may\r\nsoon fnd applications
    in complex computations, chemical simulations, cryptography, and\r\noptimization.
    Now that these machines are scaled up to tackle such problems the questions\r\nof
    qubit interconnects and networks becomes very relevant. How to route signals on-chip\r\nbetween
    diferent processor components? What is the most efcient way to entangle\r\nqubits?
    And how to then send and process entangled signals between distant cryostats\r\nhosting
    superconducting processors?\r\nIn this thesis, we are looking for solutions to
    these problems by studying the collective\r\nbehavior of superconducting qubit
    ensembles. We frst demonstrate on-demand tunable\r\ndirectional scattering of
    microwave photons from a pair of qubits in a waveguide. Such a\r\ndevice can route
    microwave photons on-chip with a high diode efciency. Then we focus\r\non studying
    ultra-strong coupling regimes between light (microwave photons) and matter\r\n(superconducting
    qubits), a regime that could be promising for extremely fast multi-qubit\r\nentanglement
    generation. Finally, we show coherent pulse storage and periodic revivals\r\nin
    a fve qubit ensemble strongly coupled to a resonator. Such a reconfgurable storage\r\ndevice
    could be used as part of a quantum repeater that is needed for longer-distance\r\nquantum
    communication.\r\nThe achieved high degree of control over multi-qubit ensembles
    highlights not only the\r\nbeautiful physics of circuit quantum electrodynamics,
    it also represents the frst step\r\ntoward new quantum simulation and communication
    methods, and certain techniques\r\nmay also fnd applications in future superconducting
    quantum computing hardware.\r\n"
acknowledged_ssus:
- _id: NanoFab
- _id: M-Shop
- _id: EM-Fac
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Elena
  full_name: Redchenko, Elena
  id: 2C21D6E8-F248-11E8-B48F-1D18A9856A87
  last_name: Redchenko
citation:
  ama: Redchenko E. Controllable states of superconducting Qubit ensembles. 2022.
    doi:<a href="https://doi.org/10.15479/at:ista:12132">10.15479/at:ista:12132</a>
  apa: Redchenko, E. (2022). <i>Controllable states of superconducting Qubit ensembles</i>.
    Institute of Science and Technology Austria. <a href="https://doi.org/10.15479/at:ista:12132">https://doi.org/10.15479/at:ista:12132</a>
  chicago: Redchenko, Elena. “Controllable States of Superconducting Qubit Ensembles.”
    Institute of Science and Technology Austria, 2022. <a href="https://doi.org/10.15479/at:ista:12132">https://doi.org/10.15479/at:ista:12132</a>.
  ieee: E. Redchenko, “Controllable states of superconducting Qubit ensembles,” Institute
    of Science and Technology Austria, 2022.
  ista: Redchenko E. 2022. Controllable states of superconducting Qubit ensembles.
    Institute of Science and Technology Austria.
  mla: Redchenko, Elena. <i>Controllable States of Superconducting Qubit Ensembles</i>.
    Institute of Science and Technology Austria, 2022, doi:<a href="https://doi.org/10.15479/at:ista:12132">10.15479/at:ista:12132</a>.
  short: E. Redchenko, Controllable States of Superconducting Qubit Ensembles, Institute
    of Science and Technology Austria, 2022.
date_created: 2023-01-25T09:17:02Z
date_published: 2022-09-26T00:00:00Z
date_updated: 2024-08-07T07:11:56Z
day: '26'
ddc:
- '530'
degree_awarded: PhD
department:
- _id: GradSch
- _id: JoFi
doi: 10.15479/at:ista:12132
ec_funded: 1
file:
- access_level: open_access
  checksum: 39eabb1e006b41335f17f3b29af09648
  content_type: application/pdf
  creator: cchlebak
  date_created: 2023-01-25T09:41:49Z
  date_updated: 2023-01-26T23:30:44Z
  embargo: 2022-12-28
  file_id: '12367'
  file_name: Final_Thesis_ES_Redchenko.pdf
  file_size: 56076868
  relation: main_file
file_date_updated: 2023-01-26T23:30:44Z
has_accepted_license: '1'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
page: '168'
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
- _id: 26336814-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '758053'
  name: A Fiber Optic Transceiver for Superconducting Qubits
- _id: 237CBA6C-32DE-11EA-91FC-C7463DDC885E
  call_identifier: H2020
  grant_number: '862644'
  name: Quantum readout techniques and technologies
publication_identifier:
  isbn:
  - 978-3-99078-024-4
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
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: Controllable states of superconducting Qubit ensembles
type: dissertation
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2022'
...
---
_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.
date_created: 2021-08-16T09:44:09Z
date_published: 2021-08-19T00:00:00Z
date_updated: 2024-09-10T12:23:56Z
day: '19'
ddc:
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degree_awarded: PhD
department:
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- _id: JoFi
doi: 10.15479/at:ista:9920
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keyword:
- quantum computing
- superinductor
- quantum metrology
language:
- iso: eng
month: '08'
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page: '149'
publication_identifier:
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  issn:
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publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
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    relation: part_of_dissertation
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  - id: '8755'
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status: public
supervisor:
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  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: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2021'
...
