Versatile ytterbium ion trap experiment for operation of scalable ion-trap chips with motional heating and transition-frequency measurements

Abstract

This version is available from Sussex Research Online: http://sro.sussex.ac.uk/38820/ This document is made available in accordance with publisher policies and may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the URL above for details on accessing the published version. Copyright and reuse:Sussex Research Online is a digital repository of the research output of the University.Copyright and all moral rights to the version of the paper presented here belong to the individual author(s) and/or other copyright owners. To the extent reasonable and practicable, the material made available in SRO has been checked for eligibility before being made available.Copies of full text items generally can be reproduced, displayed or performed and given to third parties in any format or medium for personal research or study, educational, or not-for-profit purposes without prior permission or charge, provided that the authors, title and full bibliographic details are credited, a hyperlink and/or URL is given for the original metadata page and the content is not changed in any way. We present the design and operation of an ytterbium ion trap experiment with a setup offering versatile optical access and 90 electrical interconnects that can host advanced surface and multilayer ion trap chips mounted on chip carriers. We operate a macroscopic ion trap compatible with this chip carrier design and characterize its performance, demonstrating secular frequencies >1 MHz, and trap and cool nearly all of the stable isotopes, including 171 Yb + ions, as well as ion crystals. For this particular trap we measure the motional heating rate ṅ and observe an ṅ ∝1/ω 2 behavior for different secular frequencies ω. We also determine a spectral noise density S E (1 MHz) = 3.6(9) × 10 −11 V 2 m −2 Hz −1 at an ion electrode spacing of 310(10) µm. We describe the experimental setup for trapping and cooling Yb + ions and provide frequency measurements of the 2 S 1/2 ↔ 2 P 1/2 and 2 D 3/2 ↔ 3 D[3/2] 1/2 transitions for the stable 170 Yb + , 171 Yb + , 172 Yb + , 174 Yb + ,a n d 176 Yb + isotopes which are more precise than previously published work.

Optogalvanic spectroscopy of metastable states in Yb+

“…Figure 5 shows a 14 GHz span encompassing the observed peaks, taken with 18 mW of 935.2 nm laser power and amplitude modulated at Fig. 5 and the spectra is in qualitative agreement with previously published work [1,19]. The hyperfine structure of Yb + 171 and 173 can be seen to overlap with the peaks from 174, 172, and 170.…”

“…The integrated optogalvanic signal over the Yb + 176 peak is 12 ± 1% of the total integrated signal, consistent with the natural abundance of 12.7%. Other peak assignments were verified through a combination of known wavelengths and hyperfine splittings from trapped ion experiments and weighting based on natural abundance and Clebsch-Gordon coefficients [19]. We measure a splitting between the 174/172 peaks of 2.39 ± 0.01 GHz and a splitting of 2.33 ± 0.01 GHz between the 174/176 peaks.…”

Doppler-free Yb spectroscopy with the fluorescence spot technique

“…Using frequencies measured from our technique we were able to photoionize and trap Yb + isotopes in an ion-trapping experiment [35]. To ionize an Yb atom a 399-nm photon is required to drive the 1 S 0 ↔ 1 P 1 transition where a further 369-nm photon excites an electron past the continuum [22,27].…”

Thick-film technology for ultra high vacuum interfaces of micro-structured traps

“…At the same time, many of these experiments, especially those related to quantum information science, require versatile and detailed control [3][4][5][6][7][8][9][10][11][12][13]. For a recent review of micro-structured ion traps, see [14].…”