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@ARTICLE{Schmitt:907777,
      author       = {Schmitt, Tobias and Connolly, Malcolm R. and Schleenvoigt,
                      Michael and Liu, Chenlu and Kennedy, Oscar and
                      Chávez-Garcia, José M. and Jalil, Abdur R. and Bennemann,
                      Benjamin and Trellenkamp, Stefan and Lentz, Florian and
                      Neumann, Elmar and Lindström, Tobias and de Graaf,
                      Sebastian E. and Berenschot, Erwin and Tas, Niels and
                      Mussler, Gregor and Petersson, Karl D. and Grützmacher,
                      Detlev and Schüffelgen, Peter},
      title        = {{I}ntegration of {T}opological {I}nsulator {J}osephson
                      {J}unctions in {S}uperconducting {Q}ubit {C}ircuits},
      journal      = {Nano letters},
      volume       = {22},
      number       = {7},
      issn         = {1530-6984},
      address      = {Washington, DC},
      publisher    = {ACS Publ.},
      reportid     = {FZJ-2022-02206},
      pages        = {2595 - 2602},
      year         = {2022},
      abstract     = {The integration of semiconductor Josephson junctions (JJs)
                      in superconducting quantum circuits provides a versatile
                      platform for hybrid qubits and offers a powerful way to
                      probe exotic quasiparticle excitations. Recent proposals for
                      using circuit quantum electrodynamics (cQED) to detect
                      topological superconductivity motivate the integration of
                      novel topological materials in such circuits. Here, we
                      report on the realization of superconducting transmon qubits
                      implemented with (Bi0.06Sb0.94)2Te3 topological insulator
                      (TI) JJs using ultrahigh vacuum fabrication techniques.
                      Microwave losses on our substrates, which host
                      monolithically integrated hardmasks used for the selective
                      area growth of TI nanostructures, imply microsecond limits
                      to relaxation times and, thus, their compatibility with
                      strong-coupling cQED. We use the cavity–qubit interaction
                      to show that the Josephson energy of TI-based transmons
                      scales with their JJ dimensions and demonstrate qubit
                      control as well as temporal quantum coherence. Our results
                      pave the way for advanced investigations of topological
                      materials in both novel Josephson and topological qubits.},
      cin          = {PGI-9 / PGI-10 / HNF},
      ddc          = {660},
      cid          = {I:(DE-Juel1)PGI-9-20110106 / I:(DE-Juel1)PGI-10-20170113 /
                      I:(DE-Juel1)HNF-20170116},
      pnm          = {5222 - Exploratory Qubits (POF4-522)},
      pid          = {G:(DE-HGF)POF4-5222},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:35235321},
      UT           = {WOS:000812795200001},
      doi          = {10.1021/acs.nanolett.1c04055},
      url          = {https://juser.fz-juelich.de/record/907777},
}