Hannover 2020 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 27: Quantum Optics III
Q 27.5: Talk
Wednesday, March 11, 2020, 12:00–12:15, f342
Enhancing magnetic resonance via quantum optimal control — •Marco Rossignolo1,2, Peter Höfer3, Patrick Carl3, Ressa S. Said1, Tommaso Calarco4, Fedor Jelezko1, and Simone Montangero2 — 1Institute for Quantum Optics and Center for Integrated Quantum Science and Technology, Universität Ulm, D-89081 Ulm — 2Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, I-35131 Padova — 3Bruker BioSpin, Silberstreifen 4, D-76287 Rheinstetten — 4Institute for Quantum Control, Peter Grünberg Institut 8, Forschungszentrum Jülich GmbH, D-52525 Jülich
Electron Paramagnetic Resonance (EPR) is the technology that provides you the possibility to study the materials by exploring the internal structure and interactions between atoms and molecules via microwave fields. Exploiting particular pulse sequence schemes one can in principle decouple the system under investigation from the surrounding environment. Due to the inhomogeneities in the material, standard rectangular pulses could not work as expected and a clear view of the physics could be compromised. Here we show that by shaping the control time-dependent pulses via Optimal Control the intensity of the dominating signal has been increased in basic pulse sequences. Moreover, we enhanced furthermore the intallows of the signal, in a remote closed-loop optimization, that is, exploding the experiment feedback. This allows us to take into account unexpected sources of ntestedd perform calibration according to unknown properties of the physical system. The aforementioned results are tested for relevant industrial applications in collaboration with Bruker BioSpin.