Highly-polarizable ion in a Paul trap

Abstract

Usually the influence of the quadratic Stark effect on an ion's trapping potential is minuscule and only needs to be considered in atomic clock experiments. In this work we excite a trapped ion to a Rydberg state with polarizability $\sim$~eight orders of magnitude higher than a low-lying electronic state; we find that the highly-polarizable ion experiences a vastly different trapping potential owing to the Stark effect. We observe changes in trap stiffness, equilibrium position and minimum potential, which can be tuned using the trapping electric fields. These effects lie at the heart of proposals to shape motional mode spectra, simulate quantum magnetism and coherently drive structural phase transitions; in addition we propose using these effects to simulate cosmological particle creation, study quantum fluctuations of work and minimize ion micromotion. Mitigation of Stark effects is important for coherent control of Rydberg ions; we illustrate this by carrying out the first Rabi oscillations between a low-lying electronic state and a Rydberg state of an ion.

4 pages, 7 pages supplemental material

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Cited by in corpus (12)

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• Observation of effects due to an atom's electric quadrupole polarizability
• Micromotion minimization using Ramsey interferometry
• Single-shot measurements of phonon number states using the Autler-Townes effect
• Precision measurement of the ionization energy of a single trapped ${}^{40}$Ca${}^{+}$ ion by Rydberg series excitation
• Motional state analysis of a trapped ion by ultra-narrowband composite pulses
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• Spin Phonon Relaxation Dynamics from a Conical Intersection of Trapped Rydberg Ions
• Magic trapping of a Rydberg ion with a diminished static polarizability