PT Journal
AU Gaggero, A
   Nejad, SJ
   Marsili, F
   Mattioli, F
   Leoni, R
   Bitauld, D
   Sahin, D
   Hamhuis, GJ
   Nötzel, R
   Sanjines, R
   Fiore, A
TI Nanowire superconducting single-photon detectors on GaAs for integrated quantum photonic applications
SO Applied Physics Letters
JI Appl. Phys. Lett.
PY 2010
BP 3
VL 97
IS 15
DE SSPD
AB We demonstrate efficient nanowire superconducting single photon detectors (SSPDs) based on NbN thin films grown on GaAs. NbN films ranging from 3 to 5 nm in thickness have been deposited by dc magnetron sputtering on GaAs substrates at 350 °C. These films show superconducting properties comparable to similar films grown on sapphire and MgO. In order to demonstrate the potential for monolithic integration, SSPDs were fabricated and measured on GaAs/AlAs Bragg mirrors, showing a clear cavity enhancement, with a peak quantum efficiency of 18.3% at λ = 1300 nm and T = 4.2 K.
ER