Hannover 2013 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 48: Ultracold atoms: Traps and cooling
Q 48.5: Vortrag
Donnerstag, 21. März 2013, 12:00–12:15, A 310
Hardware-in-the-Loop simulation of a strongly coupled atom-cavity system — •Maria Bernard-Schwarz1, Tatjana Wilk2, and Martin Gröschl3 — 1National Instruments, Germany — 2MPQ, Germany — 3TU Wien, Austria
The question whether classical concepts can be adapted to the quantum world is explored. The Hardware-in-the-Loop (HiL) approach is a common tool in industry to test a part of a system before implementing it into the real device. The HiL simulation acts like the real system and is used as a substitute during the development of the control algorithm. The advantage hereby is that the algorithm can be tested and modified even before any part of the real device exists. The system of interest is a strongly coupled atom-cavity system. There are two different specifications to control, first the motion of a two-level atom inside the cavity and second, the internal states of several multilevel atoms in the cavity. For these demands a performance of the HiL simulation of the atom-cavity system in the sub-microsecond range is required. In both cases high performance computing with the help of different platforms such as Real-Time processor, FPGA (Field Programmable Gate Array) and GPU (Graphical Processor Unit) is accomplished. The HiL simulation tools are available within the software platform LabVIEW which is also the platform of the experimental control system. The HiL simulation reproduces the dependency of the photon counts on the atomic position, which is the basis for feedback control on the atomic position.