Superconducting nanowire single photon detectors fabricated from an amorphous Mo0.75Ge0.25 thin film
Abstract
We present the characteristics of superconducting nanowire single photon detectors (SNSPDs) fabricated from amorphous Mo0.75Ge0.25 thin-films. Fabricated devices show a saturation of the internal detection efficiency at temperatures below 1 K, with system dark count rates below 500 cps. Operation in a closed-cycle cryocooler at 2.5 K is possible with system detection efficiencies exceeding 20% for SNSPDs which have not been optimized for high detection efficiency. Jitter is observed to vary between 69 ps at 250 mK and 187 ps at 2.5 K using room temperature amplifiers.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 14, 2014
- Source ID
- 10.1063/1.4890277
Entities
People
- A. E. Lita
- D. P. Pappas
- F. Marsili
- M. R. Vissers
- R. P. Mirin
- S. W. Nam
- V. B. Verma
Organizations
- Defense Advanced Research Projects Agency
- National Institute of Standards and Technology