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  • Title: Simulating the Dicke lattice model and quantum phase transitions using an array of coupled resonators.
    Author: Leng SY, Lü DY, Yang SL, Ma M, Dong YZ, Zhou BF, Zhou Y.
    Journal: J Phys Condens Matter; 2022 Aug 04; 34(41):. PubMed ID: 35896108.
    Abstract:
    A proposal for simulating the Dicke-Lattice model in a mechanics-controlled hybrid quantum system is studied here. An array of coupled mechanical resonators (MRs) can homogeneously interact with a group of trapped Bose-Einstein condensates (BECs) via the gradient magnetic field induced by the oscillating resonators. Assisted by the classical dichromatic radio-wave fields, each subsystem with the BEC-MR interaction can mimic the Dicke type spin-phonon interaction, and the whole system is therefore extended to a lattice of Dicke models with the additional adjacent phonon-phonon hopping couplings. In view of this lattice model with theZ2symmetry, its quantum phase transitions behavior can be controlled by this periodic phonon-phonon interactions in the momentum space. This investigation may be considered as a fresh attempt on manipulating the critical behaviors of the collective spins through the external mechanical method.
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