Martina Knoop

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

High power broad-area diode laser at 794 nm injected by an external cavity laser

\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

Some aspects of simulation and realization of an optical reference cavity

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

Terahertz Frequency Standard Based on Three-Photon Coherent Population Trapping

^{43}

Doppler cooling of calcium ions using a dipole-forbidden transition

Ca

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

^{+}

Parallel ion strings in linear multipole traps

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

Long-term stabilization of the length of an optical reference cavity

-2 \times 10^{-16}