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000903248 1001_ $$0P:(DE-HGF)0$$aShen, Yuan$$b0
000903248 245__ $$aGHZ-like states in the Qubit-Qudit Rabi model
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000903248 520__ $$aWe study a Rabi type Hamiltonian system in which a qubit and a d-level quantum system (qudit) are coupled through a common resonator. In the weak and strong coupling limits the spectrum is analysed through suitable perturbative schemes. The analysis show that the presence of the multilevels of the qudit effectively enhance the qubit-qudit interaction. The ground state of the strongly coupled system is found to be of Greenberger-Horne-Zeilinger (GHZ) type. Therefore, despite the qubit-qudit strong coupling, the nature of the specific tripartite entanglement of the GHZ state suppresses the bipartite entanglement. We analyze the system dynamics under quenching and adiabatic switching of the qubit-resonator and qudit-resonator couplings. In the quench case, we found that the non-adiabatic generation of photons in the resonator is enhanced by the number of levels in the qudit. The adiabatic control represents a possible route for preparation of GHZ states. Our analysis provides relevant information for future studies on coherent state transfer in qubit-qudit systems.
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000903248 7001_ $$0P:(DE-HGF)0$$aMarchegiani, Giampiero$$b1
000903248 7001_ $$0P:(DE-Juel1)151130$$aCatelani, Gianluigi$$b2$$eCorresponding author
000903248 7001_ $$0P:(DE-HGF)0$$aAmico, Luigi$$b3
000903248 7001_ $$0P:(DE-HGF)0$$aLiu, Ai Qun$$b4
000903248 7001_ $$0P:(DE-HGF)0$$aFan, Weijun$$b5
000903248 7001_ $$0P:(DE-HGF)0$$aKwek, Leong Chuan$$b6
000903248 773__ $$0PERI:(DE-600)2886659-9$$a10.21468/SciPostPhys.11.6.099$$gVol. 11, no. 6, p. 099$$n6$$p099$$tSciPost physics$$v11$$x2542-4653$$y2021
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