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Repeated interaction processes in the continuous-time limit, applied to quadratic fermionic systems

We study a class of Lindblad equation on finite-dimensional fermionic systems. The model is obtained as the continuous-time limit of a repeated interaction process between fermionic systems with quadratic Hamiltonians, a setup already used by Platini and Karevski for the one-dimensional XY model. We prove a necessary and sufficient condition for the convergence to a unique stationary state, which is similar to the Kalman criterion in control theory. Several examples are treated, including a spin chain with interactions at both ends.

preprint2019arXivOpen access
Simon Andreys
math-phmath.MP
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Simon Andreys

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