Multichannel SNSPD system with high detection efficiency at telecommunication wavelength
Multichannel SNSPD system with high detection efficiency at telecommunication wavelength
We developed a four-channel superconducting nanowire single-photon detector system based on a Gifford-McMahon cryocooler.All channels showed a system detection efficiency (at a 100 Hz dark-count rate) higher than 16% at 1550 nm wavelength, and the best channel showed a system DE of 21% and 30% at 1550 nm and 1310 …