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M. Bernard-Schwarz:
"Quantum Optics control system for single atoms experiments";
Vortrag: Seminar Institut für Allgemeine Physik (IAP), TU Wien, IAP; 17.06.2014.

The two main components for quantum optics experiments are a resonator, in our case to interact with single atoms, and computational power in order to simulate experiments, control the setup and analyze results. Our system of interest is a strongly coupled atom-cavity experiment. The goal is to develop tools for controlling the external degrees of freedom, the motion of the atom [1], as well as the internal degrees of freedom, the quantum state of the system [2]. The experimental control requires the generation of precisely timed computer-controlled measurement sequences. In order to fulfill these requirements on the hardware programming level, we use a Real-Time Operating System. This guarantees the response of control tasks within certain time periods. By implementation of a Real-Time based system, we centralize the controller, data acquisition cards, FPGAs and quantum optics analysis tools [3] within one platform. The presentation will show the concepts using FPGAs for simulating quantum optics problems and discuss the implementation of this new experimental control system.

[1] M. Koch et.al., "Feedback Cooling of a Single Neutral Atom", Phys. Rev. Lett. 105, 173003 (2010)
[2] S. Brakhane et.al.,"Bayesian Feedback Control of a Two-Atom Spin-State in an Atom-Cavity System", Phys. Rev. Lett. 109, 173601 (2012)
[3] LabVIEW Quantum Optics Toolkit https://decibel.ni.com/content/docs/DOC-30311