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Q: Fachverband Quantenoptik und Photonik

Q 41: Poster: Quantum Optics and Photonics II

Q 41.1: Poster

Mittwoch, 13. März 2019, 16:15–18:15, S Fobau Physik

Filter effects in quantum optimal control using Krotov's method — •Matthias Krauss, Sabrina Patsch, Daniel M. Reich, and Christiane P. Koch — Theoretische Physik, Universität Kassel, Heinrich-Plett-Straße 40, D-34132 Kassel, Germany

The experimental implementation of pulse shapes obtained via optimal control theory is often complicated due to a distortion of the computed pulses, caused by a transition function characterizing the pulse generation hardware. We propose an extension to Krotov's method, which incorporates these filter functions and thus accounts for the distortion of the pulse already during the optimization process. This makes it possible to circumvent the problems arising in classical deconvolution which occur for filter functions with zeros in their spectra. We apply this algorithm to the reset of a qubit connected to a reservoir [Basilewitsch et al., New J. Phys. 19, 113042 (2017)] and to the propagation of a circular Rydberg state [Patsch et al., Phys. Rev. A 97, 053418 (2018)]. The relevant filter functions in these cases can not easily be deconvoluted. We demonstrate successful optimization for this class of filter functions.