---
res:
  bibo_abstract:
  - 'Quantum information and computation has become a vast field paved with opportunities
    for researchers and investors. As large multinational companies and international
    funds are heavily investing in quantum technologies it is still a question which
    platform is best suited for the task of realizing a scalable quantum processor.
    In this work we investigate hole spins in Ge quantum wells. These hold great promise
    as they possess several favorable properties: a small effective mass, a strong
    spin-orbit coupling, long relaxation time and an inherent immunity to hyperfine
    noise. All these characteristics helped Ge hole spin qubits to evolve from a single
    qubit to a fully entangled four qubit processor in only 3 years. Here, we investigated
    a qubit approach leveraging the large out-of-plane g-factors of heavy hole states
    in Ge quantum dots. We found this qubit to be reproducibly operable at extremely
    low magnetic field and at large speeds while maintaining coherence. This was possible
    because large differences of g-factors in adjacent dots can be achieved in the
    out-of-plane direction. In the in-plane direction the small g-factors, on the
    other hand, can be altered very effectively by the confinement potentials. Here,
    we found that this can even lead to a sign change of the g-factors. The resulting
    g-factor difference alters the dynamics of the system drastically and produces
    effects typically attributed to a spin-orbit induced spin-flip term.  The investigations
    carried out in this thesis give further insights into the possibilities of holes
    in Ge and reveal new physical properties that need to be considered when designing
    future spin qubit experiments.@eng'
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Daniel
      foaf_name: Jirovec, Daniel
      foaf_surname: Jirovec
      foaf_workInfoHomepage: http://www.librecat.org/personId=4C473F58-F248-11E8-B48F-1D18A9856A87
    orcid: 0000-0002-7197-4801
  bibo_doi: 10.15479/at:ista:10058
  dct_date: 2021^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/2663-337X
  dct_language: eng
  dct_publisher: Institute of Science and Technology Austria@
  dct_subject:
  - qubits
  - quantum computing
  - holes
  dct_title: Singlet-Triplet qubits and spin-orbit interaction in 2-dimensional Ge
    hole gases@
...