Generating two-dimensional quantum gases with high stability

Xiao Bo^{1, 2}, Wang Xuan-Kai^{1, 2}, Zheng Yong-Guang^{1, 2}, Yang Yu-Meng^{1, 2}, Zhang Wei-Yong^{1, 2}, Su Guo-Xian^{1, 2}, Li Meng-Da^{1, 2}, Jiang Xiao^{1, 2}, Yuan Zhen-Sheng^{1, 2, †}

Current supplies and the coils for providing a stabilized low-noise magnetic field. The commercial proportional–integral–derivative (PID) units (SRS, SIM960) control the output of BCS current sources to actively compensate the current drift of coils, while its output offset is modified every experimental trial to correct environmental magnetic field drift.