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MQDT data for: Spectroscopy of Rydberg states in erbium using electromagnetically induced transparency

A. Trautmann, Manfred J. Mark, P. Ilzhöfer, Hagai Edri, Amal El Arrach, Julian G Maloberti, Chris H. Greene, F. Robicheaux, Francesca Ferlaino

Published Aug 25, 2021• 0 citations
Publisher

Abstract

We present a study of the Rydberg spectrum in 166Er for series connected to the 4f12 (3H6) 6s Jc = 13/2, and Jc = 11/2 ionic core states using an all-optical detection based on electromagnetically induced transparency in an effusive atomic beam. Identifying approximately 550 individual states, we find
DOI
10.4231/hk40-xm43

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Spectroscopy of Rydberg states in erbium using electromagnetically induced transparency

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We present a study of the Rydberg spectrum in $^{166}\mathrm{Er}$ for series connected to the $4{f}^{12}(^{3}H_{6})6s$, ${J}_{c}=13/2$, and ${J}_{c}=11/2$ ionic core states using an all-optical detection based on electromagnetically induced transparency in an effusive atomic beam. Identifying approximately 550 individual states, we find good agreement with a multichannel quantum defect theory (MQDT) which allows assignment of most states to $ns$ or $nd$ Rydberg series. We provide an improved accuracy for the lowest two ionization thresholds to ${E}_{\mathrm{IP},{J}_{c}=13/2}=49260.750(1)\phantom{\rule{0.28em}{0ex}}{\mathrm{cm}}^{\ensuremath{-}1}$ and ${E}_{\mathrm{IP},{J}_{c}=11/2}=49701.184(1)\phantom{\rule{0.28em}{0ex}}{\mathrm{cm}}^{\ensuremath{-}1}$ as well as the corresponding quantum defects for all observed series. We identify Rydberg states in five different isotopes, and states between the two lowest ionization thresholds. Our results open the way for future applications of Rydberg states for quantum simulation using erbium and exploiting its special open-shell structure.

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•Nov 28, 2007•27 citations
We present a study of the Rydberg spectrum in 166Er^{166}\mathrm{Er}166Er for series connected to the 4f12(3H6)6s4{f}^{12}(^{3}H_{6})6s4f12(3H6​)6s, Jc=13/2{J}_{c}=13/2Jc​=13/2, and Jc=11/2{J}_{c}=11/2Jc​=11/2 ionic core states using an all-optical detection based on electromagnetically induced transparency in an effusive atomic beam. Identifying approximately 550 individual states, we find good agreement with a multichannel quantum defect theory (MQDT) which allows assignment of most states to nsnsns or ndndnd Rydberg series. We provide an improved accuracy for the lowest two ionization thresholds to ${E}_{\mathrm{IP},{J}_{c}=13/2}=49260.750(1)\phantom{\rule{0.28em}{0ex}}{\mathrm{cm}}^{\ensuremath{-}1}$ and ${E}_{\mathrm{IP},{J}_{c}=11/2}=49701.184(1)\phantom{\rule{0.28em}{0ex}}{\mathrm{cm}}^{\ensuremath{-}1}$ as well as the corresponding quantum defects for all observed series. We identify Rydberg states in five different isotopes, and states between the two lowest ionization thresholds. Our results open the way for future applications of Rydberg states for quantum simulation using erbium and exploiting its special open-shell structure.
Rydberg atoms possess highly excited valence electrons that are far away from atomic cations. Compared with ground states, Rydberg states are excited states with a high principal quantum number n that exhibit large electric dipole moments and have a variety of applications in quantum information processing. In this communication, we report the measurement of the 6Li Rydberg excitation spectrum by ladder-type electromagnetically induced transparency (EIT) in a vapor cell. The 2p→ns/nd EIT spectra were recorded by sweeping the frequency of an ultraviolet Rydberg pumping laser while keeping the probing laser resonant to the 2s→2p transition. All lasers were locked on an ultrastable optical Fabry-Pérot cavity and measured by an optical frequency comb. Our results provide valuable information to precisely determine quantum defects and enable novel experiments with Rydberg-dressed ultracold Fermi gases.
We report on the all-optical detection of Rydberg states in an effusive atomic beam of strontium atoms using electromagnetically induced transparency (EIT). Using narrow-linewidth CW lasers we obtain an EIT linewidth of 5 MHz. To illustrate the high spectroscopic resolution offered by this method, we have measured isotope shifts of the 5s18d 1 D 2 and 5s19s 1 S 0 Rydberg states. This technique could be applied to high-resolution, non-destructive measurements of ultra-cold Rydberg gases and plasmas.
We report on the all-optical detection of Rydberg states in an effusive atomic beam of strontium atoms using electromagnetically induced transparency (EIT). Using narrow-linewidth CW lasers we obtain an EIT linewidth of 5MHz. To illustrate the high spectroscopic resolution offered by this method, we have measured isotope shifts of the 5s18d(1)D(2) and 5s19s(1)S(0) Rydberg states. This technique could be applied to high-resolution, non-destructive measurements of ultra-cold Rydberg gases and plasmas.