Supported by the National Key Research and Development Program of China under Grant No 2017YFA0304400;the National Natural Science Foundation of China under Grant Nos 91336213,11703031,U1731132 and 11774108
We demonstrate a simple scheme of 6.835 GHz microwave source based on the sub-sampling phase lock loop(PLL). A dielectric resonant oscillator of 6.8 GHz is directly phase locked to an ultra-low phase noise 100 MHz ove...
Supported by the National Natural Science Foundation of China under Grant No 11604353;the Youth Innovation Promotion Association of Chinese Academy of Sciences
The Dick effect is an important factor limiting the frequency stability of sequentially-operating atomic frequency standards. Here we study the impact of the Dick effect in the integrating sphere cold atom clock (IS...
Supported by the Young Scientists Fund of the National Natural Science Foundation of China under Grant No 11304177;the National Basic Research Program of China under Grant No 2010CB922901
The Dick effect is one of the main limits to the frequency stability of a passive frequency standard, especially for the fountain clock and ion dock operated in pulsed mode which require unavoidable dead time during i...