Extended Data Fig. 4: Detailed measurement setup.
From: Bolometer operating at the threshold for circuit quantum electrodynamics
The blue rectangle corresponds to the SEM image displayed in Fig. 1a. The model numbers on the filters, couplers and amplifiers refer to Mini-Circuits product numbers. Nominal temperatures of the different cryostat plates (dashed horizontal lines) are indicated. The 180° bends and spirals refer to long segments in the coaxial microwave cables and Thermocoax cables, respectively, which function as thermal bottlenecks separating the different temperature stages. The top-most dashed line refers to the boundary of the cryostat. The nested millikelvin radiation shields are made of gold-plated copper.
