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00925njm 22002777a 4500 dc Cao García, Francisco Javier author Feito, M. author 2009-04-10 We compute the entropy reduction in feedback controlled systems due to the repeated operation of the controller. This was the lacking ingredient to establish the thermodynamics of these systems, and in particular of Maxwell’s demons. We illustrate some of the consequences of our general results by deriving the maximum work that can be extracted from isothermal feedback controlled systems. As a case example, we finally study a simple system that performs an isothermal information-fueled particle pumping. Cao, F. J., & Feito, M. (2009). Thermodynamics of feedback controlled systems. Physical Review E, 79(4), 041118. 2470-0045 10.1103/PhysRevE.79.041118 https://hdl.handle.net/20.500.14352/104495 2470-0053 https://doi.org/10.1103/PhysRevE.79.041118 https://journals.aps.org/pre/abstract/10.1103/PhysRevE.79.041118 Thermodynamics of feedback controlled systems