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@ARTICLE{Cardani:892637,
      author       = {Cardani, L. and Valenti, F. and Casali, N. and Catelani, G.
                      and Charpentier, T. and Clemenza, M. and Colantoni, I. and
                      Cruciani, A. and D’Imperio, G. and Gironi, L. and
                      Grünhaupt, L. and Gusenkova, D. and Henriques, F. and
                      Lagoin, M. and Martinez, M. and Pettinari, G. and Rusconi,
                      C. and Sander, O. and Tomei, C. and Ustinov, A. V. and
                      Weber, M. and Wernsdorfer, W. and Vignati, M. and Pirro, S.
                      and Pop, I. M.},
      title        = {{R}educing the impact of radioactivity on quantum circuits
                      in a deep-underground facility},
      journal      = {Nature Communications},
      volume       = {12},
      number       = {1},
      issn         = {2041-1723},
      address      = {[London]},
      publisher    = {Nature Publishing Group UK},
      reportid     = {FZJ-2021-02226},
      pages        = {2733},
      year         = {2021},
      abstract     = {As quantum coherence times of superconducting circuits have
                      increased from nanoseconds to hundreds of microseconds, they
                      are currently one of the leading platforms for quantum
                      information processing. However, coherence needs to further
                      improve by orders of magnitude to reduce the prohibitive
                      hardware overhead of current error correction schemes.
                      Reaching this goal hinges on reducing the density of broken
                      Cooper pairs, so-called quasiparticles. Here, we show that
                      environmental radioactivity is a significant source of
                      nonequilibrium quasiparticles. Moreover, ionizing radiation
                      introduces time-correlated quasiparticle bursts in
                      resonators on the same chip, further complicating quantum
                      error correction. Operating in a deep-underground
                      lead-shielded cryostat decreases the quasiparticle burst
                      rate by a factor thirty and reduces dissipation up to a
                      factor four, showcasing the importance of radiation
                      abatement in future solid-state quantum hardware.},
      cin          = {PGI-11},
      ddc          = {500},
      cid          = {I:(DE-Juel1)PGI-11-20170113},
      pnm          = {522 - Quantum Computing (POF4-522)},
      pid          = {G:(DE-HGF)POF4-522},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {33980835},
      UT           = {WOS:000662985500001},
      doi          = {10.1038/s41467-021-23032-z},
      url          = {https://juser.fz-juelich.de/record/892637},
}