Research output: Working paper › Preprint
Hyperfine interaction in the Autler-Townes effect II : 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.
2023. p. 1-19.Research output: Working paper › Preprint
}
TY - UNPB
T1 - Hyperfine interaction in the Autler-Townes effect II
T2 - 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 - 2023/12/5
Y1 - 2023/12/5
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.
KW - physics.atom-ph
KW - quant-ph
U2 - 10.48550/arXiv.2312.02801
DO - 10.48550/arXiv.2312.02801
M3 - Preprint
SP - 1
EP - 19
BT - Hyperfine interaction in the Autler-Townes effect II
ER -
ID: 114905912