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Dive into the research topics where Caroline Champenois is active.

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Featured researches published by Caroline Champenois.


Physics Letters A | 2004

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

Caroline Champenois; Marie Houssin; C Lisowski; Martina Knoop; Gaetan Hagel; M Vedel; Fernande Vedel

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


Physical Review A | 2006

Quantum coherence and population trapping in three-photon processes

Caroline Champenois; Giovanna Morigi; J. Eschner

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


European Physical Journal D | 2004

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

Martina Knoop; Caroline Champenois; Gaetan Hagel; Marie Houssin; C Lisowski; M Vedel; Fernande Vedel

with


Physical Review A | 2010

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

Caroline Champenois; Mathieu Marciante; Jofre Pedregosa-Guttierez; Marie Houssin; Martina Knoop; Masatoshi Kajita

\tau


Physical Review Letters | 2007

Terahertz Frequency Standard Based on Three-Photon Coherent Population Trapping

Caroline Champenois; Gaetan Hagel; Marie Houssin; Martina Knoop; Cedric Zumsteg; Fernande Vedel

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


Physical Review A | 2009

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

F. Calvo; Caroline Champenois; Ersin Yurtsever

^{43}


Journal of Physics B | 2009

About the dynamics and thermodynamics of trapped ions

Caroline Champenois

Ca


Physical Review A | 2008

Doppler cooling of calcium ions using a dipole-forbidden transition

Richard J. Hendricks; Jens Lykke Sørensen; Caroline Champenois; Martina Knoop; Michael Drewsen

^{+}


Physical Review A | 2010

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

Mathieu Marciante; Caroline Champenois; A. Calisti; Jofre Pedregosa-Gutierrez; Martina Knoop

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


Physical Review A | 2011

Parallel ion strings in linear multipole traps

Mathieu Marciante; Caroline Champenois; Jofre Pedregosa-Gutierrez; A. Calisti; Martina Knoop

-2 \times 10^{-16}

Collaboration


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Martina Knoop

Aix-Marseille University

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F Vedel

Centre national de la recherche scientifique

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A. Calisti

Aix-Marseille University

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Gérard Trénec

Centre national de la recherche scientifique

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