Extended Data Fig. 2: Schematic diagram for the magnetic field stabilization.
From: Observation and quantification of the pseudogap in unitary Fermi gases
a, The experimental platform is enclosed with several layers of mu-metal plates. b, The ultrastable magnet power supply for generating the required magnetic field of 689.68 G, which is further stabilized with an analog proportional integral derivative controller. c, The active magnetic field compensation system that includes (1) a current measurement setup, consisting of a high precision current sensor and an 8.5-digit multimeter; (2) a proportional integral controlled compensation current source, consisting of a digital proportional integral, a waveform generator, and a voltage-controlled bipolar current source; and (3) a pair of compensation coils. d, A series of low-pass filters, which are composed of several capacitors and inductors. e, The microwave pulse is synchronized to the mains electricity.
