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@ARTICLE{Gustavsson:825701,
      author       = {Gustavsson, S. and Yan, F. and Catelani, G. and Bylander,
                      J. and Kamal, A. and Birenbaum, J. and Hover, D. and
                      Rosenberg, D. and Samach, G. and Sears, A. P. and Weber, S.
                      J. and Yoder, J. L. and Clarke, J. and Kerman, A. J. and
                      Yoshihara, F. and Nakamura, Y. and Orlando, T. P. and
                      Oliver, W. D.},
      title        = {{S}uppressing relaxation in superconducting qubits by
                      quasiparticle pumping},
      journal      = {Science},
      volume       = {354},
      number       = {6319},
      issn         = {1095-9203},
      address      = {Washington, DC [u.a.]},
      publisher    = {American Association for the Advancement of Science64196},
      reportid     = {FZJ-2017-00018},
      pages        = {1573 - 1577},
      year         = {2016},
      abstract     = {Dynamical error suppression techniques are commonly used to
                      improve coherence in quantum systems. They reduce dephasing
                      errors by applying control pulses designed to reverse
                      erroneous coherent evolution driven by environmental noise.
                      However, such methods cannot correct for irreversible
                      processes such as energy relaxation. We investigate a
                      complementary, stochastic approach to reducing errors:
                      Instead of deterministically reversing the unwanted qubit
                      evolution, we use control pulses to shape the noise
                      environment dynamically. In the context of superconducting
                      qubits, we implement a pumping sequence to reduce the number
                      of unpaired electrons (quasiparticles) in close proximity to
                      the device. A $70\%$ reduction in the quasiparticle density
                      results in a threefold enhancement in qubit relaxation times
                      and a comparable reduction in coherence variability.},
      cin          = {PGI-2},
      ddc          = {500},
      cid          = {I:(DE-Juel1)PGI-2-20110106},
      pnm          = {144 - Controlling Collective States (POF3-144)},
      pid          = {G:(DE-HGF)POF3-144},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000390254300049},
      pubmed       = {pmid:27940578},
      doi          = {10.1126/science.aah5844},
      url          = {https://juser.fz-juelich.de/record/825701},
}