Hyperfine-Resolved Spectroscopy of Dysprosium Monoxide (DyO)
Zack D. Lasner, Aidan T. Ohl, Nicole M. Albright, Kendall L. Rice, Charlene Peng, Lan Cheng, John M. Doyle, Benjamin L. Augenbraun
TL;DR
This paper studies the hyperfine structure of dysprosium monoxide to explore its potential for detecting new physics through nuclear Schiff moment measurements.
Contribution
The study provides hyperfine parameters for DyO isotopologues, enabling optical cycling and precision measurements for symmetry-violating effects.
Findings
Hyperfine parameters of DyO ground and excited states were measured for 161Dy and 163Dy.
Results align well with relativistic quantum chemical calculations.
DyO is shown to be a viable candidate for optical cycling and NSM searches.
Abstract
We perform laser spectroscopy of dysprosium monoxide (DyO) to determine the hyperfine structure of the ground X8 and excited [17.1]7 states in the 161Dy and 163Dy isotopologues. These dysprosium nuclei have nonzero nuclear spin and dynamical octupole deformation, providing them high sensitivity to time-reversal-violating new physics via the nuclear Schiff moment (NSM). The DyO molecule was recently identified as being amenable to optical cyclingthe basis for many laser cooling and quantum control techniqueswhich makes it a practical candidate for NSM searches. The measurements reported here are prerequisites to implementing optical cycling, designing precision measurement protocols, and benchmarking calculations of molecular sensitivity to symmetry-violating effects. The measured hyperfine parameters are interpreted using simple molecular orbital diagrams and show excellent agreement…
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Taxonomy
TopicsCold Atom Physics and Bose-Einstein Condensates · Quantum optics and atomic interactions · Laser-Matter Interactions and Applications