Research output: Contribution to journal › Article › peer-review
Hyperfine interaction in the Autler-Townes effect: Control of two-photon selection rules in the Morris-Shore basis. / Cinins, Arturs; Efimov, Dmitry K.; Bruvelis, Martins; Miculis, Kaspars; Kirova, Teodora; Bezuglov, Nikolai N.; Ryabtsev, Igor I.; Auzinsh, Marcis; Ekers, Aigars.
In: Physical Review A, Vol. 109, No. 6, 063116 , 18.06.2024.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Hyperfine interaction in the Autler-Townes effect: Control of two-photon selection rules in the Morris-Shore basis
AU - Cinins, Arturs
AU - Efimov, Dmitry K.
AU - Bruvelis, Martins
AU - Miculis, Kaspars
AU - Kirova, Teodora
AU - Bezuglov, Nikolai N.
AU - Ryabtsev, Igor I.
AU - Auzinsh, Marcis
AU - Ekers, Aigars
PY - 2024/6/18
Y1 - 2024/6/18
N2 - We investigated the absence of certain bright peaks in Autler-Townes laser excitation spectra of alkali metal atoms. Our research revealed that these dips in the spectra are caused by a specific architecture of adiabatic (or ``laser-dressed'') states in hyperfine (HF) components. The dressed states' analysis pinpointed several cases where constructive and destructive interference between HF excitation pathways in a two-photon excitation scheme limits the available two-photon transitions. This results in a reduction of the conventional two-photon selection rule for the total angular momentum $F$, from $\Delta F= 0,\pm 1$ to $\Delta F\equiv 0$. Our discovery presents practical methods for selectively controlling the populations of unresolvable HF $F$-components of $ns_{1/2}$ Rydberg states in alkali metal atoms. Using numerical simulations with sodium and rubidium atoms, we demonstrate that by blocking the effects of HF interaction with a specially tuned auxiliary control laser field, the deviations from the ideal selectivity of the HF components population can be lower than $0.01\%$ for Na and $0.001\%$ for Rb atoms.
AB - We investigated the absence of certain bright peaks in Autler-Townes laser excitation spectra of alkali metal atoms. Our research revealed that these dips in the spectra are caused by a specific architecture of adiabatic (or ``laser-dressed'') states in hyperfine (HF) components. The dressed states' analysis pinpointed several cases where constructive and destructive interference between HF excitation pathways in a two-photon excitation scheme limits the available two-photon transitions. This results in a reduction of the conventional two-photon selection rule for the total angular momentum $F$, from $\Delta F= 0,\pm 1$ to $\Delta F\equiv 0$. Our discovery presents practical methods for selectively controlling the populations of unresolvable HF $F$-components of $ns_{1/2}$ Rydberg states in alkali metal atoms. Using numerical simulations with sodium and rubidium atoms, we demonstrate that by blocking the effects of HF interaction with a specially tuned auxiliary control laser field, the deviations from the ideal selectivity of the HF components population can be lower than $0.01\%$ for Na and $0.001\%$ for Rb atoms.
UR - https://www.mendeley.com/catalogue/770cb525-69fb-3f48-b65b-5af1e33e6f91/
U2 - 10.1103/physreva.109.063116
DO - 10.1103/physreva.109.063116
M3 - Article
VL - 109
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
SN - 1050-2947
IS - 6
M1 - 063116
ER -
ID: 121020451