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Q: Fachverband Quantenoptik und Photonik

Q 18: Ultra-cold atoms, ions and BEC II

Q 18.2: Vortrag

Dienstag, 15. März 2011, 10:45–11:00, BAR 106

an electron-ion crystal in a linear Paul trap — •Weibin Li and Igor Lesanovsky — School of Physics and Astronomy, The University of Nottingham, Nottingham NG7 2RD, UK

Trapping of charged particles has undergone significant advancements in the past decades. Today ions can be controlled with extreme precision in various traps at the quantum level. This has attracted enormous attentions, due to a broad variety of possible applications, for example, in precisions measurements and quantum computation. Traditional ion traps can confine either positively or negatively charged particles while the opposite charge is repelled. We demonstrate that a single electron can be trapped in the centre of a metastable doubly charged ion crystal in a linear Paul trap. A uniform magnetic field is applied in the axial direction, which tightly confines electron in the radial directions, and stabilises the system. At equilibrium, the system is approximated by coupled harmonic oscillators. We discuss the stability properties and the dynamics of the system. Our study illuminates possibilities for coherently manipulating oppositely charged particles simultaneously in linear Paul traps. This has the potential to highlight new perspectives for quantum simulators that use electrons as fundamental constituents and thus are of fundamental interest in condensed matter physics.