Fig. 1: Synchronous detection of cosmic rays and qubit relaxation.
From: Synchronous detection of cosmic rays and correlated errors in superconducting qubit arrays

The experiment included a qubit array and scintillating radiation detectors (below the cryostat) for continuous monitoring of qubit relaxation and cosmic rays. We identified individual cosmogenic particles (purple arrow) impacting the qubit array by coincidence-timing of spatiotemporally correlated qubit relaxation and detector pulses.