% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Pop:153333,
      author       = {Pop, Ioan M. and Geerlings, Kurtis and Catelani, Gianluigi
                      and Schoelkopf, Robert J. and Glazman, Leonid I. and
                      Devoret, Michel H.},
      title        = {{C}oherent suppression of electromagnetic dissipation due
                      to superconducting quasiparticles},
      journal      = {Nature},
      volume       = {508},
      number       = {7496},
      issn         = {1476-4687},
      address      = {London [u.a.]},
      publisher    = {Nature Publising Group78092},
      reportid     = {FZJ-2014-02965},
      pages        = {369 - 372},
      year         = {2014},
      abstract     = {Owing to the low-loss propagation of electromagnetic
                      signals in superconductors, Josephson junctions constitute
                      ideal building blocks for quantum memories, amplifiers,
                      detectors and high-speed processing units, operating over a
                      wide band of microwave frequencies. Nevertheless, although
                      transport in superconducting wires is perfectly lossless for
                      direct current, transport of radio-frequency signals can be
                      dissipative in the presence of quasiparticle excitations
                      above the superconducting gap1. Moreover, the exact
                      mechanism of this dissipation in Josephson junctions has
                      never been fully resolved experimentally. In particular,
                      Josephson’s key theoretical prediction that quasiparticle
                      dissipation should vanish in transport through a junction
                      when the phase difference across the junction is π (ref. 2)
                      has never been observed3. This subtle effect can be
                      understood as resulting from the destructive interference of
                      two separate dissipative channels involving electron-like
                      and hole-like quasiparticles. Here we report the
                      experimental observation of this quantum coherent
                      suppression of quasiparticle dissipation across a Josephson
                      junction. As the average phase bias across the junction is
                      swept through π, we measure an increase of more than one
                      order of magnitude in the energy relaxation time of a
                      superconducting artificial atom. This striking suppression
                      of dissipation, despite the presence of lossy quasiparticle
                      excitations above the superconducting gap, provides a
                      powerful tool for minimizing decoherence in quantum
                      electronic systems and could be directly exploited in
                      quantum information experiments with superconducting quantum
                      bits.},
      cin          = {PGI-2},
      ddc          = {070},
      cid          = {I:(DE-Juel1)PGI-2-20110106},
      pnm          = {422 - Spin-based and quantum information (POF2-422)},
      pid          = {G:(DE-HGF)POF2-422},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000334403000046},
      pubmed       = {pmid:24740067},
      doi          = {10.1038/nature13017},
      url          = {https://juser.fz-juelich.de/record/153333},
}