SAMOP 2023 – scientific programme
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A: Fachverband Atomphysik
A 12: Poster I
A 12.18: Poster
Tuesday, March 7, 2023, 16:30–19:00, Empore Lichthof
Quadrupole transitions with continuous dynamical decoupling — •Víctor José Martínez Lahuerta1, Lennart Pelzer2, Ludwig Krinner2, Kai Dietze2, Piet Schmidt2, and Klemens Hammerer3 — 1Institut für Quantenoptik, Leibniz Universität Hannover, Schneiderberg 39 30167 Hannover — 2Physikalisch-Technische Bundesanstalt (PTB), Bunde- sallee 100, 38116 Braunschweig, Germany — 3Institute for Theoretical Physics and Institute for Gravitational Physics (Albert-Einstein-Institute), Leibniz University Hannover
We consider the mechanism of continuous dynamical decoupling, focusing on gaining insensitivity to magnetic field fluctuations and quadrupole shifts. This mechanism consists in the application of a radio-frequency magnetic field orthogonal to the quantization axis of a given spin manifold. We account for the approximations realized during the calculations perturbatively by using the so-called Magnus expansion, showing that they can be considered as an effective shift of the Zeeman splitting of the manifolds. We can apply our formalism to properly describe a quadrupole transition between two manifolds, where the particular case of a transition between S=1/2 and D=5/2 of 40Ca+ is studied with a comparison with experimental data. We finish by considering the implementation of a Mölmer-Sörensen gate within the framework of continuous dynamical decoupling.