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) (a) Wire bonding and (b) optical micrographs of the SQUID device. Two overdamped dc-SQUIDs are designed, and the left one is used in this paper. |