Characterization of barrier-tunable radio-frequency-SQUID for Maxwell’s demon experiment Project supported by the National Natural Science Foundation of China (Grant No. 11653001), the National Basic Research Program of China (Grant No. 2011CBA00304), the Tsinghua University Initiative Scientific Research Program, China (Grant No. 20131089314), and the Zhejiang Tianjingsheng Foundation, China, for Student Assistantships (Gang Li and Hao Li). |
(color online) Plot of energy difference ϵ/kBT versus δϕx (where δϕx = ϕx − 0.5). Insert shows τ1 (red) and τ0 (blue) varying with δϕx at ϕCJJ = −0.268, each point is obtained by the method shown in Fig. |