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The interspersed spin boson lattice model

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Abstract

We describe a family of lattice models that support a new class of quantum magnetism characterized by correlated spin and bosonic ordering [Phys. Rev. Lett. 112, 180405 (2014)]. We explore the full phase diagram of the model using Matrix-Product-State methods. Guided by these numerical results, we describe a modified variational ansatz to improve our analytic description of the groundstate at low boson frequencies. Additionally, we introduce an experimental protocol capable of inferring the low-energy excitations of the system by means of Fano scattering spectroscopy. Finally, we discuss the implementation and characterization of this model with current circuit-QED technology.

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  1. Instituto de Física Fundamental, IFF-CSIC, Calle Serrano 113b, 28006, Madrid, Spain

    A. Kurcz, J. J. García-Ripoll & A. Bermudez

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Kurcz, A., García-Ripoll, J.J. & Bermudez, A. The interspersed spin boson lattice model. Eur. Phys. J. Spec. Top. 224, 483–496 (2015). https://doi.org/10.1140/epjst/e2015-02378-x

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