Quantum frequency bridge: high-accuracy characterization of a nearly-noiseless parametric frequency converter.
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.
Ivan A
IA
Burenkov
Thomas
T
Gerrits
Adriana
A
Lita
Sae Woo
SW
Nam
L
L
Krister Shalm
Sergey V
SV
Polyakov