Caroline Champenois

Evaluation of the ultimate performances of a Ca+ single-ion frequency standard

We numerically evaluate the expected performances of an optical frequency standard at 729 nm based on a single calcium ion. The frequency stability is studied through the Allan deviation and its dependence on the excitation method (single Rabi pulse or two Ramsey pulses schemes) and the laser linewidth are discussed. The minimum Allan deviation that can be expected is estimated to

Quantum coherence and population trapping in three-photon processes

\sigma_y(\tau) \approx 2.5\times 10^{-15}/\sqrt{\tau}

Metastable level lifetimes from electron-shelving measurements with ion clouds and single ions

with

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

\tau

Terahertz Frequency Standard Based on Three-Photon Coherent Population Trapping

the integration time. The frequency shifts induced by the environmental conditions are evaluated to minimize the uncertainty of the proposed standard by chosing the most suited environment for the ion. If using the odd isotope

Crystallization of ion clouds in octupole traps: Structural transitions, core melting, and scaling laws

^{43}

About the dynamics and thermodynamics of trapped ions

Ca

Doppler cooling of calcium ions using a dipole-forbidden transition

^{+}

Ion dynamics in a linear radio-frequency trap with a single cooling laser

and a vessel cooled to 77 K, the expected relative shift is

Parallel ion strings in linear multipole traps

-2 \times 10^{-16}