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arXiv 1901.03082physics.atom-ph
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用于高电荷态离子量子逻辑谱的低温射频离子阱

A cryogenic radio-frequency ion trap for quantum logic spectroscopy of highly charged ions

Tobias Leopold, Steven A. King, Peter Micke, Amado Bautista-Salvador, Jan C. Heip, Christian Ospelkaus, José R. Crespo López-Urrutia, Piet O. Schmidt

摘要:

本文介绍了一种用于高电荷态离子量子逻辑谱的低温射频离子阱系统。它包括一个分段的线性保罗陷阱,在真空成像透镜和螺旋谐振腔。我们证明了基态冷却的所有三种模式的运动的一个单一的$^9$是$^+$离子,并确定它们的加热速率以及过量的轴向微动。该陷阱显示了迄今为止公布的最低水平的电场噪声之一。我们调查的磁场噪声抑制在低温屏蔽由分段铜,所产生的磁场稳定性在离子的位置和所产生的相干时间。使用这种陷阱结合电子束离子阱和减速束线,我们已经能够捕获单个高电荷的Ar $^{13+}$(Ar XIV)离子同时与单个的$^+$离子,高电荷离子的第一个量子逻辑光谱的关键先决条件。

英文摘要:

A cryogenic radio-frequency ion trap system designed for quantum logic spectroscopy of highly charged ions is presented. It includes a segmented linear Paul trap, an in-vacuum imaging lens and a helical resonator. We demonstrate ground state cooling of all three modes of motion of a single $^9$Be$^+$ ion and determine their heating rates as well as excess axial micromotion. The trap shows one of the lowest levels of electric field noise published to date. We investigate the magnetic-field noise suppression in cryogenic shields made from segmented copper, the resulting magnetic field stability at the ion position and the resulting coherence time. Using this trap in conjunction with an electron beam ion trap and a deceleration beamline, we have been able to trap single highly charged Ar$^{13+}$ (Ar XIV) ions concurrently with single Be$^+$ ions, a key prerequisite for the first quantum logic spectroscopy of a highly charged ion.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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