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- Chinese Academy of SciencesCN92 papers
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10 papers · 1 filter
Entanglement-enhanced Synchronous differential comparison
Deshui Yu, Jingbiao Chen, Shougang Zhang
The quantum entanglement enables the precision measurement and frequency metrology beyond the standard quantum limit that is imposed by the quantum projection noise and photon shot…
Absolute frequency measurement of the 87Sr optical lattice clock at NTSC using International Atomic Time
Xiaotong Lu, Feng Guo, Yebing Wang +5
We report the absolute frequency measurement of the 5s2 1S0-5s5p 3P0 transition in 87Sr optical lattice clock (Sr1) at National Time Service Center (NTSC). Its systematic frequency…
Searching for nascent planetary nebulae: OHPNe candidates in the SPLASH survey
Roldán A. Cala, José F. Gómez, Luis F. Miranda +7
The evolution of asymptotic giant branch stars from the spherical symmetry into the diverse shapes of planetary nebulae (PNe) is a topic of intensive research. Young PNe provide a…
Water Maser Survey towards off-plane O-rich AGBs around the orbital plane of the Sagittarius Stellar Stream
Yuanwei Wu, Bo Zhang, Jingjing Li +1
A 22 GHz water maser survey was conducted towards 178 O-rich AGB stars with the aim of identifying maser emission associated with the Sagittarius stellar stream. In this survey, ma…
Superfluid density and collective modes of fermion superfluid in dice lattice
Yu-Rong Wu, Xiao-Fei Zhang, Chao-Fei Liu +2
The superfluid properties of attractive Hubbard model in dice lattice are investigated. It is found that three superfluid order parameters increase as the interaction increases. Wh…
Spectrally resolved two-photon interference in a modified Hong-Ou-Mandel interferometer
Baihong Li, Boxin Yuan, Changhua Chen +5
A modified Hong--Ou--Mandel (HOM) interference reveals that the two-photon interference phenomenon can be explained only by the concept of a two-photon wave packet rather than a si…