36 citations · 177 across the 11 of their papers we have counts for
11 papers
Preliminary characterization of a surface electrode Paul trap for frequency metrology
Josipa Madunic, Lucas Groult, Bachir Achi +7
We are developing a single-ion optical clock based on a surface-electrode (SE) trap that we will operate with Yb ions on the electric quadrupole transition at 435.5 nm.…
Heating rate measurement and characterization of a prototype surface-electrode trap for optical frequency metrology
Thomas Lauprêtre, Bachir Achi, Lucas Groult +4
We present the characterization of a prototype surface-electrode (SE) trap as a first step towards the realization of a compact, single-ion optical clock based on Yb. The use o…
Absolute frequency measurements of the transition in ytterbium
Thomas Lauprêtre, Lucas Groult, Bachir Achi +4
The ytterbium atom is widely used in the fields of atomic physics, cavity quantum electrodynamics, quantum information processing and optical frequency standards. There is however…
Controlling the potential landscape and normal modes of ion Coulomb crystals by a standing wave optical potential
Thomas Lauprêtre, Rasmus B. Linnet, Ian D. Leroux +3
Light-induced control of ions within small Coulomb crystals is investigated. By intense intracavity optical standing wave fields, subwavelength localization of individual ions is a…
Localization of ions within one-, two- and three-dimensional Coulomb crystals by a standing wave optical potential
Thomas Lauprêtre, Rasmus B. Linnet, Ian D. Leroux +2
We demonstrate light-induced localization of Coulomb-interacting particles in multi-dimensional structures. Subwavelength localization of ions within small multi-dimensional Coulom…
Light storage via coherent population oscillation in a thermal cesium vapor
A. J. F. de Almeida, J. Sales, M. -A. Maynard +5
We report on the storage of light via the phenomenon of Coherent Population Oscillation (CPO) in an atomic cesium vapor at room temperature. In the experiment the optical informati…
Ultranarrow CPO resonance in a Λ-type atomic system
T. Lauprêtre, S. Kumar, P. Berger +4
It is well known that ultranarrow electromagnetically induced transparency (EIT) resonances can be observed in atomic gases at room temperature. We report here the experimental obs…
Anomalous ring-down effects and breakdown of the decay rate concept in optical cavities with negative group delay
T. Lauprêtre, S. Schwartz, R. Ghosh +3
Propagation of light pulses through negative group velocity media is known to give rise to a number of paradoxical situations that seem to violate causality. The solution of these…
Interacting double dark resonances in a hot atomic vapor of helium
S. Kumar, T. Lauprêtre, R. Ghosh +2
We experimentally and theoretically study two different tripod configurations using metastable helium (He*), with the probe field polarization perpendicular and parallel to the…
Photon lifetime in a cavity containing a slow-light medium
Thomas Lauprêtre, Cédric Proux, Rupamanjari Ghosh +3
We investigate experimentally the lifetime of the photons in a cavity containing a medium exhibiting strong positive dispersion. This intracavity positive dispersion is provided by…
Observation of Electromagnetically Induced Transparency and Slow Light in the Dark State - Bright State Basis of CPT
T. Lauprêtre, J. Ruggiero, R. Ghosh +2
Electromagnetically induced transparency (EIT) is observed in a three-level system composed of an excited state and two coherent superpositions of the two ground-state levels. This…