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
N1 - Funding Information:
This research was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation, Grant No. 388405737). This work was funded by the Deutsche Forschungsgemeinschaft (DFG) under Germany’s Excellence Strategy EXC2121 (“Quantum Universe,” 390833306).
Publisher Copyright:
© 2020 Author(s).
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
SN - 0034-6748
VL - 91
JO - Review of Scientific Instruments
JF - Review of Scientific Instruments
IS - 3
M1 - 035114
ER -