PT Journal AU Stevens, M Hadfield, R Schwall, R Nam, SW Mirin, R Gupta, J TI Fast lifetime measurements of infrared emitters using a low-jitter superconduct- ing single-photon detector SO Applied Physics Letters JI Appl. Phys. Lett. PY 2006 BP 031109 VL 89 DI 10.1063/1.2221516 DE SSPD; jitter; QD; QW ER