Abstract
We consider a composite system: an anisotropic two-qubit Heisenberg XY Z chain coupled independently to their own environments. We take one of the qubit as the subsystem and the other qubit as an auxiliary qubit, and then the subsystem we concern can be considered to be coupled to a structured bath (auxiliary qubit + environments). Based on this, we study the non-Markovianity of the subsystem dynamics and show how the subsystem dynamics can be changed by manipulating the intensity of the qubit-qubit couplings or the anisotropy parameter. Moreover, we show how entanglement between the subsystem and the structured bath can be affected by the properties of the structured bath and the magnetic field.
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