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Q: Fachverband Quantenoptik und Photonik

Q 46: Quantum Control (joint session QI/Q)

Q 46.2: Vortrag

Donnerstag, 9. März 2023, 11:30–11:45, B305

Optimal Control in the Chopped Random Basis — •Matthias Müller — Forschungszentrum Jülich GmbH

We are at the verge of the second quantum revolution where quantum technology leaves the lab and enters industrial products. Fragile quantum systems with their unique features like superposition and entanglement can offer new perspectives in computation, communication and sensing/metrology. However, they need sophisticated mechanisms of control to perform the desired tasks. Quantum Optimal Control has proven to be a powerful tool to accomplish this task. I will report on the optimization in the dressed chopped random basis (dCRAB) [1], a versatile and robust approach to Quantum Optimal Control, that allows both closed-loop and open-loop optimization with limited pulse bandwidth and guaranteed convergence in a broad range of typical applications. The interplay of constraints, control resources and noise [2,3] is crucial for the overall performance of the controlled operation which obeys fundamental bounds that can be found also in full quantum control [4].

[1] M.M. Müller et al., Rep. Prog. Phys. 85 076001 (2022) [2] S. Lloyd et al., PRL 113, 010502 (2014) [3] M.M. Müller et al., arxiv:2006.16113 (2020) [4] S. Gherardini et al., Phys. Rev. Research 4 (2), 023027 (2022)