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arXiv 2102.02793physics.atom-ph
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用于高电荷态离子频率计量的超低噪声超导射频离子阱

An ultralow-noise superconducting radio-frequency ion trap for frequency metrology with highly charged ions

J. Stark, C. Warnecke, S. Bogen, S. Chen, E. A. Dijck, S. Kühn, M. K. Rosner, A. Graf, J. Nauta, J. -H. Oelmann, L. Schmöger, M. Schwarz, D. Liebert, L. J. Spie… 展开作者

J. Stark, C. Warnecke, S. Bogen, S. Chen, E. A. Dijck, S. Kühn, M. K. Rosner, A. Graf, J. Nauta, J. -H. Oelmann, L. Schmöger, M. Schwarz, D. Liebert, L. J. Spieß, S. A. King, T. Leopold, P. Micke, P. O. Schmidt, T. Pfeifer, J. R. Crespo López-Urrutia

摘要:

提出了一种新型的超稳超导射频离子阱,它由射频腔和线性Paul阱组合而成。它的RF四极模在34.52 MHz,在4.1 K的温度下达到$Q\approx2.3\times 10^5$的品质因数,并用于径向限制离子在超低噪声赝势。预期此概念强烈抑制运动加热速率及相关频率偏移,所述运动加热速率及相关频率偏移限制用于频率计量的先进离子阱中所实现的最终准确度。超导阱通过其低振动低温冷却系统、电子束离子阱和提供高电荷离子(HCI)的减速束线运行,为离子种类的光学频率计量提供了理想的条件。我们报告其验证的原理操作作为一个四极质量过滤器与HCI,并捕获多普勒冷却${}^9\text{Be}^+$库仑晶体。

英文摘要:

We present a novel ultrastable superconducting radio-frequency (RF) ion trap realized as a combination of an RF cavity and a linear Paul trap. Its RF quadrupole mode at 34.52 MHz reaches a quality factor of $Q\approx2.3\times 10^5$ at a temperature of 4.1 K and is used to radially confine ions in an ultralow-noise pseudopotential. This concept is expected to strongly suppress motional heating rates and related frequency shifts which limit the ultimate accuracy achieved in advanced ion traps for frequency metrology. Running with its low-vibration cryogenic cooling system, electron beam ion trap and deceleration beamline supplying highly charged ions (HCI), the superconducting trap offers ideal conditions for optical frequency metrology with ionic species. We report its proof-of-principle operation as a quadrupole mass filter with HCI, and trapping of Doppler-cooled ${}^9\text{Be}^+$ Coulomb crystals.

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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