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@ARTICLE{Shen:903248,
      author       = {Shen, Yuan and Marchegiani, Giampiero and Catelani,
                      Gianluigi and Amico, Luigi and Liu, Ai Qun and Fan, Weijun
                      and Kwek, Leong Chuan},
      title        = {{GHZ}-like states in the {Q}ubit-{Q}udit {R}abi model},
      journal      = {SciPost physics},
      volume       = {11},
      number       = {6},
      issn         = {2542-4653},
      address      = {Amsterdam},
      publisher    = {SciPost Foundation},
      reportid     = {FZJ-2021-04955},
      pages        = {099},
      year         = {2021},
      abstract     = {We study a Rabi type Hamiltonian system in which a qubit
                      and a d-level quantum system (qudit) are coupled through a
                      common resonator. In the weak and strong coupling limits the
                      spectrum is analysed through suitable perturbative schemes.
                      The analysis show that the presence of the multilevels of
                      the qudit effectively enhance the qubit-qudit interaction.
                      The ground state of the strongly coupled system is found to
                      be of Greenberger-Horne-Zeilinger (GHZ) type. Therefore,
                      despite the qubit-qudit strong coupling, the nature of the
                      specific tripartite entanglement of the GHZ state suppresses
                      the bipartite entanglement. We analyze the system dynamics
                      under quenching and adiabatic switching of the
                      qubit-resonator and qudit-resonator couplings. In the quench
                      case, we found that the non-adiabatic generation of photons
                      in the resonator is enhanced by the number of levels in the
                      qudit. The adiabatic control represents a possible route for
                      preparation of GHZ states. Our analysis provides relevant
                      information for future studies on coherent state transfer in
                      qubit-qudit systems.},
      cin          = {PGI-11},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-11-20170113},
      pnm          = {5221 - Advanced Solid-State Qubits and Qubit Systems
                      (POF4-522)},
      pid          = {G:(DE-HGF)POF4-5221},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000727026600001},
      doi          = {10.21468/SciPostPhys.11.6.099},
      url          = {https://juser.fz-juelich.de/record/903248},
}