Recent progress on the 27Al+ ion optical clock

被引：7
|
作者：
Xu, Z. T. [1 ]
Yuan, W. H. [1 ]
Zeng, X. Y. [1 ]
Che, H. [1 ]
Shi, X. H. [1 ]
Deng, K. [1 ]
Zhang, J. [1 ]
Lu, Z. H. [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Phys, MOE Key Lab Fundamental Phys Quant Measurement, Wuhan 430074, Peoples R China
来源：
8TH SYMPOSIUM ON FREQUENCY STANDARDS AND METROLOGY 2015 | 2016年 / 723卷
关键词：
D O I：
10.1088/1742-6596/723/1/012026
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
An aluminium ion optical clock is under development at Huazhong University of Science and Technology. The Mg-25(+) ion is chosen as logic ion to sympathetically cool an Al+ ion and to detect its states. The Mg-25(+) ion is cooled to the motional ground state through Raman sideband cooling as the first step for quantum logic spectroscopy. Ultra-stable lasers for the interrogation of the clock transition are developed. The instability of the laser beat frequency is 1.2x10(-15) at 1 s, which is close to the thermal noise limit of the reference cavity.
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页数：6
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