Bachir ACHI : "Miniature optical single ion clock"

Abstract : The overall goal of the project is the development of a compact optical atomic clock based on single, trapped Yb+ ions. The targeted volume is of order 100 L., with a targeted stability of 10-14 at 1 second integration time, ten times better than today's best compact atomic clocks. The ions will be laser-cooled and trapped by a micro-fabricated, surface-electrodes trap. The objectives of the PhD thesis will be the experimental realization of the clock, with a focus on the clock laser and the design of a compact vacuum chamber. The ion trap will be micro-fabricated using MEMS technologies in the nearby MIMENTO cleanroom facility. The optical setup will make use of fibered components whenever possible, so as to reduce the overall volume. Once the setup will be running, the main experimental results will be the spectroscopy of the clock transition and a first study of the clock frequency stability.

Jury composition :

Pr. Laurent Hilico (Reporter): Professor - Université Evry Val Essonne

Dr. Sébastien Bize (Reporter): Research Director CNRS

Dr. Nils Huntemann (Reviewer) : Head of worling group - PTB

Dr. Albane Douillet (Reviewer) : Maîtresse de conférence à l'Université Evry Val Essonne

Dr. Vincent Giordano (PhD Director) :  Research Director, CNRS

Dr. Clément Lacroûte (Encadrant de thèse) : Researcher CNRS

Dr. Moustafa Abdel-Hafiz (Co-encadrant de thèse) : Associate Professor, ENSMM 

Localization : Amphithéâtre Jules Haag - ENSSM - 26, Rue de l'Epitaphe - 25000 Besançon