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@PHDTHESIS{Geck:893042,
      author       = {Geck, Lotte},
      title        = {{S}calable {C}ontrol {E}lectronics for a {S}pin {B}ased
                      {Q}uantum {C}omputer},
      volume       = {65},
      school       = {RWTH Aachen University},
      type         = {Dissertation},
      address      = {Jülich},
      publisher    = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
      reportid     = {FZJ-2021-02520},
      isbn         = {978-3-95806-540-6},
      series       = {Schriften des Forschungszentrums Jülich Reihe Information
                      / Information},
      pages        = {xiv, 114, xv-xxxiii},
      year         = {2021},
      note         = {Dissertation, RWTH Aachen University, 2020},
      abstract     = {In the last years, the topic of quantum computing has
                      received increased attention and arising number of
                      universities, research institutes and companies are
                      exploring it. Onereason for that is the great potential to
                      solve some of today’s practically intractablemathematical
                      problems. The superiority of quantum computers is based on
                      quantum mechanicaleffects in the smallest computation unit,
                      the quantum bit (qubit). The operationand readout of these
                      qubits is complex and very sensitive to noise and other
                      disturbances.For a universal, programmable quantum computer
                      qubit numbers in the order of millionsneed to be operated
                      together which is a great scale up from today’s 53
                      qubits.For a qubit several dierent implementations exist and
                      one promising candidate type arequbits made out of
                      semiconductor materials. They typically store information in
                      the spinof localized charge carriers. The manipulation of
                      that spin and the corresponding computationis possible
                      through electrical signals. However, due to the operation
                      requirementsof the qubit the electronic-qubit interface is
                      very complex and current control methodsare not feasible for
                      large qubit numbers.The goal of this work is a systematic
                      study of the scalability of integrated controlelectronics
                      based on existing, industrial complementary
                      metal-oxide-semiconductor(CMOS) technology. Included in this
                      goal is also the identication of potential hindrancesto the
                      scalability and necessary subsequent research and the
                      interaction of the electronicswith other parts of the
                      quantum computer. In this work, the so called
                      gallium-arsenideS-T qubit is used as a reference and most of
                      the technology parameter values take a65 nm CMOS process
                      into account.In a first step, a control concept for the
                      qubits was developed and its scalability judgedon the
                      estimated area and power consumption of the integrated
                      circuit. Next to the65nm technology parameter values, also
                      extrapolated values for smaller nodes wereused. Results show
                      that the main hindrance to scalability is the power
                      consumption ofthe electronics and in order to scale up to
                      millions of qubits technology advancementsare necessary,
                      among others. In the more near term application technologies
                      with lowdigital supply voltage are promising.The second step
                      was to derive a behavioral model not only of the electronic
                      controlconcept but the interface to the rest of the quantum
                      computer and the qubit, as well.Simulations of the complete
                      system show that the electronics concept works as
                      designedand qubit control is possible. The interaction of
                      the different units also highlights thatprocesses critical
                      to the scalability are for example the measurement and the
                      adaption ofpulse sequences to each individual qubit.},
      cin          = {ZEA-2},
      cid          = {I:(DE-Juel1)ZEA-2-20090406},
      pnm          = {899 - ohne Topic (POF4-899)},
      pid          = {G:(DE-HGF)POF4-899},
      typ          = {PUB:(DE-HGF)3 / PUB:(DE-HGF)11},
      urn          = {urn:nbn:de:0001-2021080444},
      url          = {https://juser.fz-juelich.de/record/893042},
}