High-resolution spectroscopy of 162Dy Rydberg levels

Year: 2026

Authors: Ferioli G., Lombardi P., Sekhar P., Cardona E.S., Preti N., Drevon C., Antolini N., Tanzi L., Modugno G., Gabbanini C., Robicheaux F., Fioretti A.

Autors Affiliation: Univ Firenze, Dipartimento Fis & Astron, Via G Sansone 1, I-50019 Sesto Fiorentino, Italy; European Lab Nonlinear Spect, Via N Carrara 1, I-50019 Sesto Fiorentino, Italy; CNR, Ist Nazl Ott, Via N Carrara 1, I-50019 Sesto Fiorentino, Italy; CNR, Ist Nazl Ott, Via Moruzzi 1, I-56124 Pisa, Italy; Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA; Purdue Univ, Purdue Quantum Sci & Engn Inst, W Lafayette, IN 47907 USA.

Abstract: Highly excited Rydberg states of lanthanides are a promising, yet largely unexplored, playground for quantum studies. Here we report on the first high-resolution spectroscopy of 162Dy obtained by two-color trap depletion spectroscopy in a magneto-optical trap. The absolute excitation frequency of over 700 states with effective principal quantum number 21 n 130 is measured with an accuracy of 20 MHz. Most states are assigned to the eight different series converging to the first 4f10(5I8)6s(2S1/2)6I17/2 ionization potential. This energy is measured at EIP = 47 901.8265 +/- 0.0008 cm-1, improving the precision of the literature value by over an order of magnitude. A multichannel-quantum-defect-theory approach is used to benchmark and refine the assignments and to characterize six observed perturbing states belonging to higher ionization limits. These results pave the way for using dysprosium in Rydberg-based quantum architectures, leveraging the unique properties arising from its complex electronic structure. They also represent a compelling benchmark for ab initio calculations of open-shell atomic systems.

Journal/Review: PHYSICAL REVIEW A

Volume: 113 (6)      Pages from: 62807-1  to: 62807-11

More Information: We acknowledge support from the European Union through the ERC SUPERSOLIDS Project No.101055319, and the QuantERA Programme, project MAQS, under Grant Agreement No. 731473, with funding organization Consiglio Nazionale delle Ricerche. We acnowledge support from the National Quantum Science and Technology Institute (NQSTI) , funded by the European Union NextGen erationEU, NRRP (National Recovery and Resilience Plan) Mission 4, Component 2, Investment 1.3-Project PE00000023, CUP B53C22004180005. A.F. and L.T. acknowledge funding from the Italian MUR (PRIN DiQut Grant No. 2022523NA7). F.R. was supported by the National Science Foundation under Award No. 2410890-PHY. We thank Giulia Semeghini, Igor Ferrier-Barbut, Antoine Browaeys, Steven Lepoutre, Patrick Cheinet, Daniel Comparat, and Thomas Gallagher for very fruitful discussions. We thank Leonardo Salvi and his team for providing the high-resolution wavemeter and its calibration.
KeyWords: States
DOI: 10.1103/h4q7-6t3s