Sympathetic electromagnetically induced transparency ground state cooling of a 40Ca+-27Al+pair in an 27Al+clock
- Resource Type
- Academic Journal
- Authors
- Chenglong Sun; Kaifeng Cui; Sijia Chao; Yuanfei Wei; Jinbo Yuan; Jian Cao; Hualin Shu; Xueren Huang
- Source
- 中国物理B(英文版) / Chinese Physics B. 32(5):409-414
- Subject
- sympathetic electromagnetically induced transparency cooling,trapped ions,motional ground state
27Al+optical clock
- Language
- Chinese
- ISSN
- 1674-1056
We report on electromagnetically induced transparency cooling of 40Ca+to sympathetically cool the three-dimensional secular modes of motion in a 40Ca+-27Al+two-ion pair near the ground state.We observe simultaneous ground state cooling across all radial modes and axial modes of a 40Ca+-27Al+ion pair,occupying a broader cooling range in frequency space over 3 MHz.The cooling time is observed to be less than 1 ms.The mean phonon number and heating rates of all motional modes are measured.This study is not only an important step for reducing the secular motion time-dilation shift uncertainty and uptime ratio of 27Al+optical clock,but also essential for high-fidelity quantum simulations and quantum information processors using trapped ions.