title: Thermodynamics of information processing based on enzyme kinetics: An exactly solvable model of an information pump.
abstract: Motivated by the recent proposed models of the information engine [Proc. Natl. Acad. Sci. USA 109, 11641 (2012)] and the information refrigerator [Phys. Rev. Lett. 111, 030602 (2013)], we propose a minimal model of the information pump and the information eraser based on enzyme kinetics. This device can either pump molecules against the chemical potential gradient by consuming the information to be encoded in the bit stream or (partially) erase the information initially encoded in the bit stream by consuming the Gibbs free energy. The dynamics of this model is solved exactly, and the "phase diagram" of the operation regimes is determined. The efficiency and the power of the information machine is analyzed. The validity of the second law of thermodynamics within our model is clarified. Our model offers a simple paradigm for the investigating of the thermodynamics of information processing involving the chemical potential in small systems.
authors.affiliation: School of Physics, Peking University, Beijing 100871, China.
authors.forename: Yuansheng
authors.initials: Y
authors.lastname: Cao
authors.affiliation: School of Physics, Peking University, Beijing 100871, China.
authors.forename: Zongping
authors.initials: Z
authors.lastname: Gong
authors.affiliation: School of Physics, Peking University, Beijing 100871, China.|Collaborative Innovation Center of Quantum Matter, Beijing 100871, China.
authors.forename: H T
authors.initials: HT
authors.lastname: Quan