92 citations · 687 across the 16 of their papers we have counts for
17 papers · 1 filter
High-performance coherent population trapping atomic clock with direct-modulation distributed Bragg reflector laser
Peter Yun, Qinglin Li, Qiang Hao +7
The coherent population trapping (CPT) atomic clock is very promising for use in next-generation spaceborne applications owing to its compactness and high performance. In this pape…
Enhanced observation time of magneto-optical traps using micro-machined non-evaporable getter pumps
Rodolphe Boudot, James P. McGilligan, Kaitlin R. Moore +5
We show that micro-machined non-evaporable getter pumps (NEGs) can extend the time over which laser cooled atoms canbe produced in a magneto-optical trap (MOT), in the absence of o…
Progress and perspectives on composite laser-pulses spectroscopy for high-accuracy optical clocks
Thomas Zanon-Willette, Remi Lefevre, Rémi Metzdorff +7
Probing an atomic resonance without disturbing it is an ubiquitous issue in physics. This problem is critical in high-accuracy spectroscopy or for the next generation of atomic opt…
A high-performance Raman-Ramsey Cs vapor cell atomic clock
Moustafa Abdel Hafiz, Grégoire Coget, Peter Yun +3
We demonstrate a high-performance coherent-population-trapping (CPT) Cs vapor cell atomic clock using the push-pull optical pumping technique (PPOP) in the pulsed regime, allowing…
An inverted crossover resonance within one Zeeman manifold
Liam A. Salter, Emeric de Clercq, John J. McFerran
We carry out investigations of inverted crossover resonances in -driven four-level systems where can be zero. Through the use of sub-Doppler frequency modulation spectrosco…
High-performance coherent population trapping clock with polarization modulation
Peter Yun, François Tricot, Claudio Eligio Calosso +5
We demonstrate a vapor cell atomic clock prototype based on continuous-wave (CW) interrogation and double-modulation coherent population trapping (DM-CPT) technique. The DM-CPT tec…
Coherent population trapping with polarization modulation
Peter Yun, Stephane Guerandel, Emeric de Clercq
Coherent population trapping (CPT) is extensively studied for future vapor cell clocks of high frequency stability. In the constructive polarization modulation CPT scheme, a bichro…
Doppler-free spectroscopy on Cs D line with a dual-frequency laser
Moustafa Abdel Hafiz, Grégoire Coget, Emeric De Clercq +1
We report on Doppler-free laser spectroscopy in a Cs vapor cell using a dual-frequency laser system tuned on the Cs D line. Using counter-propagating beams with crossed linear…
Probe light-shift elimination in Generalized Hyper-Ramsey quantum clocks
Thomas Zanon-Willette, Emeric de Clercq, Ennio Arimondo
We present a new interrogation scheme for the next generation of quantum clocks to suppress frequency-shifts induced by laser probing fields themselves based on Generalized Hyper-R…
Quantum engineering of atomic phase-shifts in optical clocks
T. Zanon-Willette, S. Almonacil, E. de Clercq +2
Quantum engineering of time-separated Raman laser pulses in three-level systems is presented to produce an ultra-narrow optical transition in bosonic alkali-earth clocks free from…
Dick effect in a pulsed atomic clock using Coherent Population Trapping
Jean-Marie Danet, Michel Lours, Stéphane Guérandel +1
The Dick effect can be a limitation of the achievable frequency stability of a passive atomic frequency standard when the ancillary frequency source is only periodically sampled. H…
Limitations of long term stability in a coherent population trapping Cs clock
Olga Kozlova, Jean-Marie Danet, Stéphane Guérandel +1
Vapor cell atomic clocks exhibit reduced frequency stability for averaging time between about one hundred and a few thousand seconds. Here we report a study on the impact of the ma…
Ramsey spectroscopy of high-contrast CPT resonances with push-pull optical pumping in Cs vapor
Xiaochi Liu, Jean-Marc Mérolla, Stéphane Guérandel +2
We report the detection of high-contrast and narrow Coherent Population Trapping (CPT) Ramsey fringes in a Cs vapor cell using a simple-architecture laser system. The latter allows…
Coherent Population Trapping Resonances in Buffer Gas-filled Cs Vapor Cells with Push-Pull Optical Pumping
Xiaochi Liu, Jean-Marc Mérolla, Stéphane Guérandel +3
We report on a theoretical study and experimental characterization of coherent population trapping (CPT) resonances in buffer gas-filled vapor cells with push-pull optical pumping…
Magic radio-frequency dressing of nuclear spins in high-accuracy optical clocks
Thomas Zanon-Willette, Emeric de Clercq, Ennio Arimondo
A Zeeman-insensitive optical clock atomic transition is engineered when nuclear spins are dressed by a non resonant radio-frequency field. For fermionic species as Sr, $^{17…
Ultra-high Resolution Spectroscopy with atomic or molecular Dark Resonances: Exact steady-state lineshapes and asymptotic profiles in the adiabatic pulsed regime
Thomas Zanon, Emeric de Clercq, Ennio Arimondo
Exact and asymptotic lineshape expressions are derived from the semi-classical density matrix representation describing a set of closed three-level atomic or molecular states inclu…
Temperature Dependence Cancellation of the Cs Clock Frequency in the Presence of Ne Buffer Gas
Olga Kozlova, Rodolphe Boudot, Stéphane Guérandel +1
The temperature dependence of the Cs clock transition frequency in a vapor cell filled with Ne buffer gas has been measured. The experimental setup is based on the coherent populat…