Extended Data Fig. 7: Presence or absence of oscillations depending on the current sweep direction.

The device is in the most asymmetric configuration. The left panel of the figure is a zoom in of Fig. 1. We measure the voltage drop across the device as a function of magnetic field and current. We observe oscillations due to superconducting interference in the superconducting lobe or the switching current but no oscillations for the retrapping current. The current bias is swept from negative to positive values in the left panel and from positive to negative in the right panel.