48 citations · 73 across the 10 of their papers we have counts for
10 papers
Absolute frequency measurement of molecular iodine hyperfine transitions at 554 nm and its application to stabilize a 369 nm laser for Yb+ ions cooling
Y. T. Chen, N. C. Xin, H. R. Qin +4
We investigate 13 hyperfine structures of transition lines of 127I2 near 554 nm, namely, the R(50) 22-0, P(46) 22-0, P(121) 24-0, P(69) 25-1, R(146) 25-0, R(147) 28-1, P(160) 26-0,…
Precise determination of ground-state hyperfine splitting and calculation of Zeeman coefficients for 171Yb+ microwave frequency standard
J. Z. Han, B. Q. Lu, N. C. Xin +7
We report precise measurement of the hyperfine splitting and calculation of the Zeeman coefficients of the Yb ground state. The absolute hyperfine splitting frequency i…
- sympathetic-cooling bi-species Coulomb crystal applied to microwave frequency standard
Y Zheng, H. R. Qin, S. N. Miao +5
We reported the realization of a - bi-species Coulomb crystal comprising ions as coolant and verified its potential…
Second-order Doppler frequency shifts of trapped ions in a linear Paul trap
S. N. Miao, J. W. Zhang, Y. Zheng +5
The accurate evaluation of the second-order Doppler frequency shift (SODFS) of trapped ions in a linear Paul trap has been studied with experiments and molecular dynamics (MD) simu…
High-Performance Microwave Frequency Standard Based on Sympathetically Cooled Ions
Hao-Ran Qin, Sheng-Nan Miao, Ji-Ze Han +4
The ion microwave frequency standard is a candidate for the next generation of microwave frequency standard with the potential for very wide applications. The Dick effect and secon…
Determination of hyperfine splittings and Landé factors of and states of Cd for a microwave frequency standard
J. Z. Han, R. Si, H. R. Qin +6
Regarding trapped-ion microwave-frequency standards, we report on the determination of hyperfine splittings and Landé factors of Cd. The hyperfine splittings…
Sympathetic cooling of a large ion crystal with in a linear Paul trap
S. N. Miao, H. R. Qin, N. C. Xin +3
We have sympathetically cooled and crystallized ions with laser-cooled ions, and directly observed the complete large bicrystal s…
Suppression of Dick Effect in the Ramsey-CPT atomic clock by Interleaving Lock
X. L. Sun, J. W. Zhang, P. F. Cheng +2
For most passive atomic clocks, the Dick effect is one of the main limits to reach its frequency stability limitation due to quantum projection noise. In this paper, we demonstrate…
The correlation of co-located hydrogen masers
Y. C. Guo, B. Wang, H. W. Si +7
The correlation of co-located hydrogen masers (H-masers) is difficult to measure because their common-mode noise induced by the environment will be cancelled out during the compari…
Generation of correlated photon pairs in micro/nano-fibers
Liang Cui, Xiaoying Li, Cheng Guo +4
We study the generation of correlated photon pairs via spontaneous four wave mixing in a 15 cm long micro/nano-fiber (MNF). The MNF is properly fabricated to satisfy the phase matc…