Figure 3
From: Thermodynamics and efficiency of an autonomous on-chip Maxwell’s demon
Flow of information and the efficiency of its production and utilization.
(a) Entropy production rate in the Demon 
, flow of information 
and the coarse grained entropy production rate 
in the system as a function of Demon tunneling resistance (RD). Smaller resistance makes the Demon faster. While the apparent entropy production rate in the system 
, the total entropy production rate 
(Eq. (13)). In addition, the Demon entropy production rate is always the largest of the three ensuring the inequality 
(Eq. (8)). (b) The efficiency of information production, 
, its utilization, 
and that of the whole production-utilization, 
. In the fast Demon limit (RD << R), the flow of information in the Demon equals the heat dissipation rate (
), while in the slow limit the utilization of information flow becomes efficient (
). Parameters in both (a,b) are those optimal for maximum cooling power, 
and eV/κ = 0.72, extracted from data shown in Fig. 2 of the main text.
