Related papers: Hyperfine spectroscopy of optical-cycling transitions in singly ionized thulium

Hyperfine spectroscopy of optical-cycling transitions in singly ionized thulium

URL: http://arxiv.org/abs/2512.14885v1
Date: Tue, 16 Dec 2025 20:05:24 GMT
Title: Hyperfine spectroscopy of optical-cycling transitions in singly ionized thulium
Authors: Patrick Müller, Andrei Tretiakov, Amanda Younes, Nicole Halawani, Paul Hamilton, Wesley C. Campbell,
Abstract summary: We present a spectroscopic investigation of $169mathrmTm+$ that provides two key foundations for its use as a platform for advanced quantum applications.<n>First, we establish the complete spectroscopic road map for optical cycling by performing high-resolution spectroscopy on $169mathrmTm+$ ions in an ion trap.<n>Second, we report detailed characterization of a metastable state as a candidate for hosting a robust qubit, performing lifetime measurements and Zeeman-resolved microwave hyperfine spectroscopy with $mathrmkHz$ precision.
Score: 0.08376229126363227
License: http://creativecommons.org/licenses/by/4.0/
Abstract: We present a spectroscopic investigation of $^{169}\mathrm{Tm}^+$ that provides two key foundations for its use as a platform for advanced quantum applications. First, we establish the complete spectroscopic road map for optical cycling (including laser cooling) by performing high-resolution spectroscopy on $^{169}\mathrm{Tm}^+$ ions in an ion trap. We characterize the primary $313\,\mathrm{nm}$ and complementary $448/453\,\mathrm{nm}$ cycling transitions, identify the essential near-infrared repumping frequencies, and determine the magnetic-dipole hyperfine $A$ constants for all relevant levels. Second, we report detailed characterization of a metastable state as a candidate for hosting a robust qubit, performing lifetime measurements and Zeeman-resolved microwave hyperfine spectroscopy with $\mathrm{kHz}$ precision.

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