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@ARTICLE{Hiltunen:187784,
      author       = {Hiltunen, Tuukka and Bluhm, Hendrik and Mehl, Sebastian and
                      Harju, Ari},
      title        = {{C}harge-noise tolerant exchange gates of singlet-triplet
                      qubits in asymmetric double quantum dots},
      journal      = {Physical review / B},
      volume       = {91},
      number       = {7},
      issn         = {1098-0121},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {FZJ-2015-01362},
      pages        = {075301},
      year         = {2015},
      abstract     = {In the semiconductor double quantum dot singlet-triplet
                      qubit architecture, the decoherence caused by the qubit's
                      charge environment poses a serious obstacle towards large
                      scale quantum computing. The effects of the charge
                      decoherence can be mitigated by operating the qubit in the
                      so-called sweet spot regions where it is insensitive to
                      electrical noise. In this paper, we propose singlet-triplet
                      qubits based on two quantum dots of different sizes. Such
                      asymmetric double quantum dot systems allow the
                      implementation of exchange gates with controllable exchange
                      splitting J operated in the doubly occupied charge region of
                      the larger dot, where the qubit has high resilience to
                      charge noise. In the larger dot, J can be quenched to a
                      value smaller than the intradot tunneling using magnetic
                      fields, while the smaller dot and its larger splitting can
                      be used in the projective readout of the qubit.},
      cin          = {PGI-2},
      ddc          = {530},
      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:000348873800002},
      doi          = {10.1103/PhysRevB.91.075301},
      url          = {https://juser.fz-juelich.de/record/187784},
}