1.
Opt Express
; 25(2): 907-917, 2017 Jan 23.
Artigo
em Inglês
| MEDLINE
| ID: mdl-28157979
RESUMO
We demonstrate an efficient and inherently ultra-low noise frequency conversion via a parametric sum frequency generation. Due to the wide separation between the input and pump frequencies and the low pump frequency relative to the input photons, the upconversion results in only ≈100 background photons per hour. To measure such a low rate, we introduced a dark count reduction algorithm for an optical transition edge sensor.