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@ARTICLE{Berke:907773,
      author       = {Berke, Christoph and Varvelis, Evangelos and Trebst, Simon
                      and Altland, Alexander and DiVincenzo, David P.},
      title        = {{T}ransmon platform for quantum computing challenged by
                      chaotic fluctuations},
      journal      = {Nature Communications},
      volume       = {13},
      number       = {1},
      issn         = {2041-1723},
      address      = {[London]},
      publisher    = {Nature Publishing Group UK},
      reportid     = {FZJ-2022-02202},
      pages        = {2495},
      year         = {2022},
      abstract     = {From the perspective of many-body physics, the transmon
                      qubit architectures currently developed for quantum
                      computing are systems of coupled nonlinear quantum
                      resonators. A certain amount of intentional frequency
                      detuning (‘disorder’) is crucially required to protect
                      individual qubit states against the destabilizing effects of
                      nonlinear resonator coupling. Here we investigate the
                      stability of this variant of a many-body localized phase for
                      system parameters relevant to current quantum processors
                      developed by the IBM, Delft, and Google consortia,
                      considering the cases of natural or engineered disorder.
                      Applying three independent diagnostics of localization
                      theory — a Kullback–Leibler analysis of spectral
                      statistics, statistics of many-body wave functions (inverse
                      participation ratios), and a Walsh transform of the
                      many-body spectrum — we find that some of these computing
                      platforms are dangerously close to a phase of uncontrollable
                      chaotic fluctuations.},
      cin          = {PGI-11 / PGI-2},
      ddc          = {500},
      cid          = {I:(DE-Juel1)PGI-11-20170113 / I:(DE-Juel1)PGI-2-20110106},
      pnm          = {5224 - Quantum Networking (POF4-522)},
      pid          = {G:(DE-HGF)POF4-5224},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:35523783},
      UT           = {WOS:000791826000025},
      doi          = {10.1038/s41467-022-29940-y},
      url          = {https://juser.fz-juelich.de/record/907773},
}