Single Microwave Photonics

First acquisition of long trajectories (~ms) to test detector performance when the photon’s arrival time is unknown. The blue trace is the filtered detector response when a weak continuous tone was sent into the detector. Same for the orange trace, except the tone was off so when the trajectory crosses the threshold we measure a

First cooldown of SPDv4, a detector that met all design parameters.

First cooldown! All device parameters were measured and qubit lifetime statistics were acquired. Some couplings need adjustment but the design goal of > 30 us T1 and T2* was satisfied.