Extended Data Fig. 1: Temperature dependence of the jitter.
From: Demonstration of sub-3 ps temporal resolution with a superconducting nanowire single-photon detector
a,b, Jitter (a) and normalized photon count rate (b) as a function of bias current for the 80 nm-wide nanowire measured with 1550 nm light at different operating temperatures between 0.9 K and 4 K. At 4 K, a shift of about 5 ps in the timing jitter was measured in the 11–13 µA range. The switching current drops below 14 µA at 4 K due to the elevated temperature, making jitter measurements above this current impossible at this temperature. It was independently verified that the shape of the electrical pulse and the level of the amplifier noise were independent of the operating temperature. The presence of this reduction in the timing jitter at higher temperatures is an indication that the intrinsic jitter mechanism is being observed.
