An ion ring in a linear multipole trap for optical frequency metrology

Details An ion ring in a linear multipole trap for optical frequency metrology An ion ring in a linear multipole trap for optical frequency metrology

2010-03-03

arxiv.org/abs/1003.0763v2

Physical Review A: Atomic, Molecular and Optical Physics 81 (2010) 043410

Physics

Quantum Physics

Scientific paper

A ring crystal of ions trapped in a linear multipole trap is studied as a basis for an optical frequency standard. The equilibrium conditions and cooling possibilities are discussed through an analytical model and molecular dynamics simulations. A configuration which reduces the frequency sensitivity to the fluctuations of the number of trapped ions is proposed. The systematic shifts for the electric quadrupole transition of calcium ions are evaluated for this ring configuration. This study shows that a ring of 10 or 20 ions allows to reach a short term stability better than for a single ion without introducing limiting long term fluctuations.

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