Erlangen 2022 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 33: Rydberg Systems (joint session Q/A)
A 33.1: Vortrag
Freitag, 18. März 2022, 10:30–10:45, Q-H14
Trapped Rydberg Ions in Motional States for Quantum Computation and Sensing — •Jonas Vogel1, Alexander Schulze-Makuch1, Marie Niederländer1, Bastien Gely2, Arezoo Mokhberi1, and Ferdinand Schmidt-Kaler1,3 — 1QUANTUM, Institut für Physik, Universität Mainz, D-55128 Mainz, Germany — 2ENS Paris-Saclay, 91190 Gif-sur-Yvette, France — 3Helmholtz-Institut Mainz, D-55128 Mainz, Germany
Cold and controlled atoms and ions are currently of great interest for applications in quantum information processing, simulation and sensing. Excitation of trapped ions to their Rydberg states offers a unique opportunity for combining advantages of precisely controllable trapped-ion qubits with long-range and tunable Rydberg interactions [1]. Intrinsically large polarizabilities of Rydberg states result in enhanced electric field sensitivity to generate entanglement in sub-µs timescales [2]. Here, we present two-photon spectroscopy on high lying Rydberg states of 40Ca+ ions for precise determination of the se-cond ionization energy as well as principal quantum number scaling for blackbody induced ionization and depopulation rates [3]. We introduce a model to simulate the transition lineshape and study phonon number induced frequency shifts. Finally, we excite large coherent states of motion to extract the Rydberg state polarizability, a prerequisite for using Rydberg ions as electric field sensors.
[1] Mokhberi et al., Adv. At., Mol., Opt. Phys. Ch.4, 69 (2020)
[2] Vogel et al., Phys. Rev. Lett. 123, 153603 (2019)
[3] Andrijauskas et al., Phys. Rev. Lett. 127, 203001 (2021)