最小化离子阱中的时间膨胀——用库仑晶体制造光学时钟

2012 IEEE International Frequency Control Symposium Proceedings Pub Date : 2012-05-21 DOI:10.1109/FCS.2012.6243653

T. Mehlstaubler, K. Pyka, Jonas Keller, Norbert Herschbach, D. Meier, Kristijan Kuhlmann, Maksim Okhapkin, Stepan Ignatovich

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引用次数: 0

摘要

本文介绍了基于115In+中1S0-3P0跃迁的光钟激光冷却172Yb+和115In+离子线性链的新实验现状。我们在新的可扩展离子阱中成功地捕获和激光冷却了172Yb+离子的库仑晶体，这些晶体用于表征陷阱并同时冷却115In+离子。我们可以证明在大于65 μm的面积上，两个离子由于时间膨胀引起的分数频移都小于10-18。

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Minimizing time-dilation in ion traps — Towards an optical clock with Coulomb crystals

We present the status of our new experiment to lasercool linear chains of ¹⁷²Yb⁺ and ¹¹⁵In⁺ ions for an optical clock based on the ¹S₀-³P₀ transition in ¹¹⁵In⁺. We successfully have trapped and laser-cooled Coulomb crystals of ¹⁷²Yb⁺ ions in our new scalable ion trap that are used to characterize the trap and to sympathetically cool ¹¹⁵In⁺ ions. We could demonstrate an area of more than 65 μm, where the fractional frequency shifts due to time dilation are below 10^-18 for both ions.

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2012 IEEE International Frequency Control Symposium Proceedings

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