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Measurement of Magic Wavelengths for the Ca+ 40 Clock Transition

Liu, Pei-Liang, Huang, Yao, Bian, Wu, Shao, Hu, Guan, Hua, Tang, Yong-Bo, Li, Cheng-Bin, Mitroy, Jim and Gao, Ke-Lin (2015). Measurement of Magic Wavelengths for the Ca+ 40 Clock Transition. Physical Review Letters,114(22):223001-1-223001-5.

Document type: Journal Article
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IRMA ID 75039815xPUB939
Title Measurement of Magic Wavelengths for the Ca+ 40 Clock Transition
Author Liu, Pei-Liang
Huang, Yao
Bian, Wu
Shao, Hu
Guan, Hua
Tang, Yong-Bo
Li, Cheng-Bin
Mitroy, Jim
Gao, Ke-Lin
Journal Name Physical Review Letters
Publication Date 2015
Volume Number 114
Issue Number 22
ISSN 0031-9007   (check CDU catalogue  open catalogue search in new window)
Scopus ID 2-s2.0-84935890513
Start Page 223001-1
End Page 223001-5
Total Pages 5
Place of Publication United States
Publisher American Physical Society
Field of Research ENGINEERING
HERDC Category C1 - Journal Article (DIISR)
Abstract We demonstrate experimentally the existence of magic wavelengths and determine the ratio of oscillator strengths for a single trapped ion. For the first time, two magic wavelengths near 396 nm for the 40Ca+ clock transition are measured simultaneously with high precision. By tuning the applied laser to an intermediate wavelength between transitions 4s1/2→4p1/2 and 4s1/2→4p3/2, the sensitivity of the clock transition Stark shift to the oscillator strengths is greatly enhanced. Furthermore, with the measured magic wavelengths, we determine the ratio of the oscillator strengths with a deviation of less than 0.5%. Our experimental method may be applied to measure magic wavelengths for other ion clock transitions. Promisingly, the measurement of these magic wavelengths paves the way to building all-optical trapped ion clocks.
DOI http://dx.doi.org/10.1103/PhysRevLett.114.223001   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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