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@ARTICLE{Ciroth:1050096,
      author       = {Ciroth, Nils and Sala, Arnau and Xue, Ran and Ermoneit,
                      Lasse and Koprucki, Thomas and Kantner, Markus and
                      Schreiber, Lars R.},
      title        = {{N}umerical simulation of coherent spin-shuttling in a
                      {Q}u{B}us with charged defects},
      publisher    = {arXiv},
      reportid     = {FZJ-2025-05804},
      year         = {2025},
      abstract     = {Recent advances in coherent conveyor-mode spin qubit
                      shuttling are paving the way for large-scale quantum
                      computing platforms with qubit connectivity achieved by spin
                      qubit shuttles. We developed a simulation tool to
                      investigate numerically the impact of device imperfections
                      on the spin-coherence of conveyor-mode shuttling in Si/SiGe.
                      We simulate the quantum evolution of a mobile electron
                      spin-qubit under the influence of sparse and singly charged
                      point defects placed in the Si/SiGe heterostructure in close
                      proximity to the shuttle lane. We consider different
                      locations of a single charge defect with respect to the
                      center of the shuttle lane, multiple orbital states of the
                      electron in the shuttle with $g$-factor differences between
                      the orbital levels, and orbital relaxation induced by
                      electron-phonon interaction. With this simulation framework,
                      we identify the critical defect density of charged point
                      defects in the heterostructure for conveyor-mode spin qubit
                      shuttle devices and quantify the impact of a single defect
                      on the coherence of a qubit.},
      keywords     = {Mesoscale and Nanoscale Physics (cond-mat.mes-hall) (Other)
                      / Quantum Physics (quant-ph) (Other) / FOS: Physical
                      sciences (Other)},
      cin          = {PGI-11},
      cid          = {I:(DE-Juel1)PGI-11-20170113},
      pnm          = {5221 - Advanced Solid-State Qubits and Qubit Systems
                      (POF4-522)},
      pid          = {G:(DE-HGF)POF4-5221},
      typ          = {PUB:(DE-HGF)25},
      doi          = {10.48550/ARXIV.2512.03588},
      url          = {https://juser.fz-juelich.de/record/1050096},
}