Zobrazeno 1 - 10
of 90
pro vyhledávání: '"Hafiz, A. Abdel"'
Autor:
Madunic, Josipa, Groult, Lucas, Achi, Bachir, Lauprêtre, Thomas, Boudrias, Alan, Roset, Pierre, Soumann, Valérie, Kersalé, Yann, Hafiz, Moustafa Abdel, Lacroûte, Clément
We are developing a single-ion optical clock based on a surface-electrode (SE) trap that we will operate with $^{171}$Yb$^+$ ions on the electric quadrupole transition at 435.5 nm. We present heating rate measurements performed with a prototype SE tr
Externí odkaz:
http://arxiv.org/abs/2410.06639
Autor:
Carlé, Clément, Mursa, Andrei, Karvinen, Petri, Keshavarzi, Shervin, Hafiz, Moustafa Abdel, Maurice, Vincent, Boudot, Rodolphe, Passilly, Nicolas
Stability and precision of atomic devices are closely tied to the quality and stability of the internal atmosphere of the atomic vapor cells on which they rely. Such atmosphere can be stabilized by building the cell with low permeation materials such
Externí odkaz:
http://arxiv.org/abs/2404.07144
Autor:
Carlé, C., Keshavarzi, S., Mursa, A., Karvinen, P., Chutani, R., Bargiel, S., Queste, S., Vicarini, R., Abbé, P., Hafiz, M. Abdel, Maurice, V., Boudot, R., Passilly, N.
The stability and accuracy of atomic devices can be degraded by the evolution of their cell inner atmosphere. Hence, the undesired entrance or leakage of background or buffer gas, respectively, that can permeate through the cell walls, should be slow
Externí odkaz:
http://arxiv.org/abs/2303.13927
Autor:
Lauprêtre, Thomas, Achi, Bachir, Groult, Lucas, Kersalé, Yann, Delehaye, Marion, Hafiz, Moustafa Abdel, Lacroûte, Clément
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 of a SE trap will be a key factor to benefit from clean-room fabricatio
Externí odkaz:
http://arxiv.org/abs/2206.08215
Autor:
Maurice, Vincent, Carlé, Clément, Keshavarzi, Shervin, Chutani, Ravinder, Queste, Samuel, Gauthier-Manuel, Ludovic, Cote, Jean-Marc, Vicarini, Rémy, Hafiz, Moustafa Abdel, Boudot, Rodolphe, Passilly, Nicolas
Atomic devices such as atomic clocks and optically-pumped magnetometers rely on the interrogation of atoms contained in a cell whose inner content has to meet high standards of purity and accuracy. Glass-blowing techniques and craftsmanship have evol
Externí odkaz:
http://arxiv.org/abs/2205.10440
The mid-term fractional frequency stability of miniaturized atomic clocks can be limited by light-shift effects. In this Letter, we demonstrate the implementation of a symmetric Auto-Balanced Ramsey (SABR) interrogation sequence in a microcell-based
Externí odkaz:
http://arxiv.org/abs/2112.07492
Autor:
Hafiz, M. Abdel, Vicarini, R., Passilly, N., Calosso, C. E., Maurice, V., Pollock, J. W., Taichenachev, A. V., Yudin, V. I., Kitching, J., Boudot, R.
Publikováno v:
Phys. Rev. Applied 14, 034015 (2020)
Light-shifts are known to be an important limitation to the mid- and long-term fractional frequency stability of different types of atomic clocks. In this article, we demonstrate the experimental implementation of an advanced anti-light shift interro
Externí odkaz:
http://arxiv.org/abs/2005.05096
Autor:
Hafiz, Moustafa Abdel, Coget, Grégoire, Yun, Peter, Guérandel, Stéphane, de Clercq, Emeric, Boudot, Rodolphe
Publikováno v:
Journal of Applied Physics 121, 104903 (2017)
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 the detection of high-contrast and narrow Ramsey-CPT fringes. The impa
Externí odkaz:
http://arxiv.org/abs/1703.04720
Autor:
Alqalshy, Emad Mohamed, Ibrahim, Amr Mohamed, Abdel-Hafiz, Ahmed Abdel-Shakour, Kamal, Kamal Abd El-Rahman, Alazzazi, Magdy Alabasiry, Omar, Mohamed Refaat, Abdel-Wahab, Amr Saad, Mohammed, Saher Sayed
Publikováno v:
In Cancer Treatment and Research Communications 2022 31
We report on Doppler-free laser spectroscopy in a Cs vapor cell using a dual-frequency laser system tuned on the Cs D$_1$ line. Using counter-propagating beams with crossed linear polarizations, an original sign-reversal of the usual saturated absorp
Externí odkaz:
http://arxiv.org/abs/1605.09245