Fig. 2: Energy-relaxation dynamics from a cosmic ray and the measurement pulse sequence.
From: Synchronous detection of cosmic rays and correlated errors in superconducting qubit arrays
a A false-colored micrograph of the qubit array with 10 aluminum transmon qubits (orange), each capacitively coupled to a readout resonator (blue). Microwave signals for qubit control and readout were routed through a common feedline (red). The energy-relaxation response of individual qubits to a cosmic-ray impact (identified in Fig. 1) have chip-scale spatial correlations for multiple milliseconds. b Qubit relaxation events are identified from repeated measurement cycles of a pulse sequence for qubit control and readout.
