Extended Data Fig. 1: Experimental set-up.
From: Impact of ionizing radiation on superconducting qubit coherence
a, Simplified block diagram of the room-temperature electronics and dilution refrigerator configuration used for measuring the qubit frequency and coherence times. b–d, Schematic of the lead shield used to block environmental radiation. The lead shield can be raised and lowered by a scissor lift. b, In the up position, the qubits were 17 cm below the edge of the lead shield. c, In the lowered position, the edge of the lead shield was 120 cm below the qubits. d, Picture of a partially raised lead shield (in between the configurations shown in b and c). The lead bricks are wrapped in protective plastic film. e, The parameters of the qubits used in the lead shield experiment.
