We investigate collective emission from coherently driven ultracold 88Sr atoms. We perform
two sets of experiments using a strong and weak transition that are insensitive and sensitive …

Some 50 years ago, physicists, and after them the entire world, started to found their time
reference on atomic properties instead of motions of the Earth that have been in use since …

We consider various approaches to the creation of a high-stability active optical frequency
standard, where the atomic ensemble itself produces a highly stable and accurate frequency …

Atomic clocks have gained about 1 order of magnitude in accuracy every decade in the past
50 years, and the present best cases claim an uncertainty budget below1× 10− 17 in relative …

Measurement forms an essential part of our view of the world. Our world is measured and
calibrated, and we are all subject to the tyranny of these numbers. In this updated and …

STE-QUEST is a fundamental science mission which is considered for launch within the
Cosmic Vision programme of the European Space Agency (ESA). Its main scientific …

Considering the strong inhomogeneous spatial polarization and intensity distribution of
spontaneous decay fluorescence due to the Hanle effect, we propose and demonstrate a …

摘要为了抑制镱原子钟激光在光纤传输过程中引入的额外噪声, 本文系统地研究了光纤噪声抑制
的原理和实现方法. 我们利用外差拍频的方法提取光纤传输引入的相位噪声, 并通过对DDS …

Relativistic celestial mechanics–investigating the motion celestial bodies under the
influence of general relativity–is a major tool of modern experimental gravitational physics …

Ce manuscrit présente le transfert d'une référence de fréquence optique ultra-stable grâce à
un lien optique et son application à la stabilisation en fréquence d'un laser moyen …