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Q: Fachverband Quantenoptik und Photonik

Q 43: QI Poster II (joint session QI/Q)

Q 43.7: Poster

Mittwoch, 8. März 2023, 16:30–19:00, Empore Lichthof

Tailored based composite pulses for NV-color centers towards the realization of ensembles-based quantum tokens — •Jan Thieme, Josselin Bernardoff, Ricky-Joe Plate, and Kilian Singer — Experimentalphysik I, Universität Kassel, Heinrich-Plett-Straße 40, 34132 Kassel

We present numerical and experimental results of the application of tailored composite pulses [1] to shape the excitation profile addressing only selected resonances of quantum states in the system. By using analytical methods applied to the Rosen-Zener excitation model [2], we derive excitation profiles for a broadband excitation profile with respect to detuning and pulse duration. Towards this goal we are using an arbitrary waveform generator to supply these pulses to single nitrogen-vacancy color centers [3]. In the outlook we will describe how this scheme is relevant for the realization of ensemble-based quantum tokens [4].

[1] B. T. Torosov and N. V. Vitanov, Phys. Rev. A 83, 053420 (2011). [2] N. Rosen and C. Zener, Phys. Rev. 40, 502 (1932). [3] A. Schmidt, J. Bernardoff, K. Singer, J. P. Reithmaier and C. Popov, Physica Status Solidi A, 216, 1900233 (2019). [4] https://www.forschung-it-sicherheit-kommunikationssysteme.de/projekte/diqtok