TY - JOUR
T1 - NQontrol
T2 - An open-source platform for digital control-loops in quantum-optical experiments
AU - Darsow-Fromm, Christian
AU - Dekant, Luis
AU - Grebien, Stephan
AU - Schroeder, Maik
AU - Schnabel, Roman
AU - Steinlechner, Sebastian
PY - 2020/3/1
Y1 - 2020/3/1
N2 - In this paper, we present NQontrol, a digital feedback-control solution based on the ADwin platform that delivers eight simultaneous feedback loops running with 200 kHz sampling frequency and offers five second-order filtering sections per channel for flexible shaping of the feedback loop. With this system, we demonstrate a Pound-Drever-Hall lock of an optical resonator and compare its performance to an analog reference implementation. A comprehensive support package written in Python, together with a web-based graphical user interface, makes the system quick to setup and easy to use, while maintaining the full flexibility of open-source platforms.
AB - In this paper, we present NQontrol, a digital feedback-control solution based on the ADwin platform that delivers eight simultaneous feedback loops running with 200 kHz sampling frequency and offers five second-order filtering sections per channel for flexible shaping of the feedback loop. With this system, we demonstrate a Pound-Drever-Hall lock of an optical resonator and compare its performance to an analog reference implementation. A comprehensive support package written in Python, together with a web-based graphical user interface, makes the system quick to setup and easy to use, while maintaining the full flexibility of open-source platforms.
U2 - 10.1063/1.5135873
DO - 10.1063/1.5135873
M3 - Article
C2 - 32260013
VL - 91
JO - Review of Scientific Instruments
JF - Review of Scientific Instruments
SN - 0034-6748
IS - 3
M1 - 035114
ER -