Abstract
In the past decades, many groups in the world were engaged in building the microwave or optical frequency standards based on different trapped ions and achieved great improvements. A project aimed at a microwave atomic clock based on the laser-cooled 113Cd+ ions has been carried out since 2010 in our laboratory. The cadmium ion clock, a transportable clock with excellent frequency stability, is suitable in the comparison between the clocks located in different places, for example, to compare the time systems at different stations of BeiDou Navigation Satellite System, or to examine the general relativity. A linear quadruple ion trap and the technique of laser cooling are applied in this clock. Meanwhile, the cadmium clock can be designed to be transportable which requires only one laser to accomplish the laser cooling, optical pump and optical detection. In this paper, we will report the detailed progress of this clock.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Chou C, Hume D, Koelemeij J et al (2010) Frequency comparison of two high-accuracy Al+ optical clocks. Phys Rev Lett 104:070802
Madej A, Dube P, Zhou Z et al (2012) 88Sr + 445-THz single-ion reference at the 10–17 level via control and cancellation of systematic uncertainties and its measurement against the SI second. Phys Rev Lett 109:203002
Guéna J, Abgrall M, Rovera D et al (2012) Progress in atomic fountains at LNE-SYRTE. IEEE Ttrans. Ultrason., Ferroelect., Freq. Cont. 59, 391
Li T, Lin P, Li M et al (2009) The transportable cesium fountain clock NIM5: its construction and performance. Front Phys China 4:155
Tanaka U, Imajo H, Hayasaka K et al (1996) Determination of the ground-state hyperfine splitting of trapped 113Cd+ ions. Phys Rev A 53:3982
Jelenkovic B, Chung S, Prestage J et al (2006) High-resolution microwave-optical double-resonance spectroscopy of hyperfine splitting of trapped 113Cd+ ions. Phys Rev A 74:022505
Zhang J, Wang Z, Wang S et al (2012) High-resolution laser microwave double-resonance spectroscopy of hyperfine splitting of trapped 113Cd+ and 111Cd+ ions. Phys Rev A 86:022523
Zhang J, Wang Z, Wang S et al (2012) Progress towards a microwave frequency standard based on the laser cooled 113Cd+ ions. 2012 IEEE international frequency control symposium (IFCS), Baltimore, MD, USA
Wang S, Zhang J, Wang Z et al Frequency stabilization of 214.5 nm ultraviolet laser. Chin Opt Lett (in press)
Wand S, Zhang J, Miao K et al Cooling and crystallization of trapped 113Cd+ Ions for atomic clock. Chin. Phys Lett (in press)
Brimicombe MSWM, Stacey DN, Stacey V, Huhnermann H, Menzel N (1976) Proc. R. Soc. London, Ser.A 352, 141
Wang B, Gao C, Chen W et al (2012) Precise and continuous time and frequency synchronisation at the 5 × 10−19 accuracy level. Sci Rep 2:556
Acknowledgments
This work was supported by the National “973” Program of China (No. 2010CB922901) and the Tsinghua University Scientific Research Initiative Program (No. 20131080063).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2013 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Zhang, J., Wang, S., Miao, K., Wang, Z., Wang, L. (2013). Progress Towards a Microwave Atomic Clock Based on the Laser-Cooled Cadmium Ions. In: Sun, J., Jiao, W., Wu, H., Shi, C. (eds) China Satellite Navigation Conference (CSNC) 2013 Proceedings. Lecture Notes in Electrical Engineering, vol 245. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-37407-4_27
Download citation
DOI: https://doi.org/10.1007/978-3-642-37407-4_27
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-37406-7
Online ISBN: 978-3-642-37407-4
eBook Packages: EngineeringEngineering (R0)