Hyperfine interaction in the Autler-Townes effect: The formation of bright, dark, and chameleon states

Teodora Kirova, A. Cinins, D.K. Efimov, M. Bruvelis, K. Miculis, N. N. Bezuglov, M. Auzinsh, I. I. Ryabtsev, A. Ekers

Результат исследований: Научные публикации в периодических изданияхстатья

2 Цитирования (Scopus)

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This paper is devoted to clarifying the implications of hyperfine (HF) interaction in the formation of adiabatic (i.e., "laser-dressed") states and their expression in the Autler-Townes (AT) spectra. We first use the Morris-Shore model [J. R. Morris and B. W. Shore, Phys. Rev. A 27, 906 (1983)] to illustrate how bright and dark states are formed in a simple reference system where closely spaced energy levels are coupled to a single state with a strong laser field with the respective Rabi frequency Omega(S). We then expand the simulations to realistic hyperfine level systems in Na atoms for a more general case when non-negligible HF interaction can be treated as a perturbation in the total system Hamiltonian. A numerical analysis of the adiabatic states that are formed by coupling of the 3p(3/2) and 4d(5/2) states by the strong laser field and probed by a weak laser field on the 3s(1/2) - 3p(3/2) transition yielded two important conclusions. Firstly, the perturbation introduced by the HF interaction leads to the observation of what we term "chameleon" states-states that change their appearance in the AT spectrum, behaving as bright states at small to moderate Omega(S), and fading from the spectrum similarly to dark states when Omega(S) is much larger than the HF splitting of the 3p3/2 state. Secondly, excitation by the probe field from two different HF levels of the ground state allows one to address orthogonal sets of adiabatic states; this enables, with appropriate choice of Omega(S) and the involved quantum states, a selective excitation of otherwise unresolved hyperfine levels in excited electronic states.

Язык оригиналаАнглийский
Номер статьи043421
Число страниц13
ЖурналPhysical Review A
Том96
Номер выпуска4
DOI
СостояниеОпубликовано - 26 окт 2017

Предметные области Scopus

  • Физика и астрономия (все)

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Kirova, Teodora ; Cinins, A. ; Efimov, D.K. ; Bruvelis, M. ; Miculis, K. ; Bezuglov, N. N. ; Auzinsh, M. ; Ryabtsev, I. I. ; Ekers, A. / Hyperfine interaction in the Autler-Townes effect : The formation of bright, dark, and chameleon states. В: Physical Review A. 2017 ; Том 96, № 4.
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title = "Hyperfine interaction in the Autler-Townes effect: The formation of bright, dark, and chameleon states",
abstract = "This paper is devoted to clarifying the implications of hyperfine (HF) interaction in the formation of adiabatic (i.e., {"}laser-dressed{"}) states and their expression in the Autler-Townes (AT) spectra. We first use the Morris-Shore model [J. R. Morris and B. W. Shore, Phys. Rev. A 27, 906 (1983)] to illustrate how bright and dark states are formed in a simple reference system where closely spaced energy levels are coupled to a single state with a strong laser field with the respective Rabi frequency Omega(S). We then expand the simulations to realistic hyperfine level systems in Na atoms for a more general case when non-negligible HF interaction can be treated as a perturbation in the total system Hamiltonian. A numerical analysis of the adiabatic states that are formed by coupling of the 3p(3/2) and 4d(5/2) states by the strong laser field and probed by a weak laser field on the 3s(1/2) - 3p(3/2) transition yielded two important conclusions. Firstly, the perturbation introduced by the HF interaction leads to the observation of what we term {"}chameleon{"} states-states that change their appearance in the AT spectrum, behaving as bright states at small to moderate Omega(S), and fading from the spectrum similarly to dark states when Omega(S) is much larger than the HF splitting of the 3p3/2 state. Secondly, excitation by the probe field from two different HF levels of the ground state allows one to address orthogonal sets of adiabatic states; this enables, with appropriate choice of Omega(S) and the involved quantum states, a selective excitation of otherwise unresolved hyperfine levels in excited electronic states.",
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author = "Teodora Kirova and A. Cinins and D.K. Efimov and M. Bruvelis and K. Miculis and Bezuglov, {N. N.} and M. Auzinsh and Ryabtsev, {I. I.} and A. Ekers",
year = "2017",
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Kirova, T, Cinins, A, Efimov, DK, Bruvelis, M, Miculis, K, Bezuglov, NN, Auzinsh, M, Ryabtsev, II & Ekers, A 2017, 'Hyperfine interaction in the Autler-Townes effect: The formation of bright, dark, and chameleon states', Physical Review A, том. 96, № 4, 043421. https://doi.org/10.1103/PhysRevA.96.043421

Hyperfine interaction in the Autler-Townes effect : The formation of bright, dark, and chameleon states. / Kirova, Teodora; Cinins, A.; Efimov, D.K.; Bruvelis, M.; Miculis, K.; Bezuglov, N. N.; Auzinsh, M.; Ryabtsev, I. I.; Ekers, A.

В: Physical Review A, Том 96, № 4, 043421, 26.10.2017.

Результат исследований: Научные публикации в периодических изданияхстатья

TY - JOUR

T1 - Hyperfine interaction in the Autler-Townes effect

T2 - The formation of bright, dark, and chameleon states

AU - Kirova, Teodora

AU - Cinins, A.

AU - Efimov, D.K.

AU - Bruvelis, M.

AU - Miculis, K.

AU - Bezuglov, N. N.

AU - Auzinsh, M.

AU - Ryabtsev, I. I.

AU - Ekers, A.

PY - 2017/10/26

Y1 - 2017/10/26

N2 - This paper is devoted to clarifying the implications of hyperfine (HF) interaction in the formation of adiabatic (i.e., "laser-dressed") states and their expression in the Autler-Townes (AT) spectra. We first use the Morris-Shore model [J. R. Morris and B. W. Shore, Phys. Rev. A 27, 906 (1983)] to illustrate how bright and dark states are formed in a simple reference system where closely spaced energy levels are coupled to a single state with a strong laser field with the respective Rabi frequency Omega(S). We then expand the simulations to realistic hyperfine level systems in Na atoms for a more general case when non-negligible HF interaction can be treated as a perturbation in the total system Hamiltonian. A numerical analysis of the adiabatic states that are formed by coupling of the 3p(3/2) and 4d(5/2) states by the strong laser field and probed by a weak laser field on the 3s(1/2) - 3p(3/2) transition yielded two important conclusions. Firstly, the perturbation introduced by the HF interaction leads to the observation of what we term "chameleon" states-states that change their appearance in the AT spectrum, behaving as bright states at small to moderate Omega(S), and fading from the spectrum similarly to dark states when Omega(S) is much larger than the HF splitting of the 3p3/2 state. Secondly, excitation by the probe field from two different HF levels of the ground state allows one to address orthogonal sets of adiabatic states; this enables, with appropriate choice of Omega(S) and the involved quantum states, a selective excitation of otherwise unresolved hyperfine levels in excited electronic states.

AB - This paper is devoted to clarifying the implications of hyperfine (HF) interaction in the formation of adiabatic (i.e., "laser-dressed") states and their expression in the Autler-Townes (AT) spectra. We first use the Morris-Shore model [J. R. Morris and B. W. Shore, Phys. Rev. A 27, 906 (1983)] to illustrate how bright and dark states are formed in a simple reference system where closely spaced energy levels are coupled to a single state with a strong laser field with the respective Rabi frequency Omega(S). We then expand the simulations to realistic hyperfine level systems in Na atoms for a more general case when non-negligible HF interaction can be treated as a perturbation in the total system Hamiltonian. A numerical analysis of the adiabatic states that are formed by coupling of the 3p(3/2) and 4d(5/2) states by the strong laser field and probed by a weak laser field on the 3s(1/2) - 3p(3/2) transition yielded two important conclusions. Firstly, the perturbation introduced by the HF interaction leads to the observation of what we term "chameleon" states-states that change their appearance in the AT spectrum, behaving as bright states at small to moderate Omega(S), and fading from the spectrum similarly to dark states when Omega(S) is much larger than the HF splitting of the 3p3/2 state. Secondly, excitation by the probe field from two different HF levels of the ground state allows one to address orthogonal sets of adiabatic states; this enables, with appropriate choice of Omega(S) and the involved quantum states, a selective excitation of otherwise unresolved hyperfine levels in excited electronic states.

KW - ATOMIC GAS

KW - LIGHT

KW - VAPOR

KW - LASER

KW - TRANSITIONS

KW - EXCITATION

KW - REDUCTION

KW - MOLECULES

KW - STORAGE

KW - FIELDS

U2 - 10.1103/PhysRevA.96.043421

DO - 10.1103/PhysRevA.96.043421

M3 - статья

VL - 96

JO - Physical Review A - Atomic, Molecular, and Optical Physics

JF - Physical Review A - Atomic, Molecular, and Optical Physics

SN - 1050-2947

IS - 4

M1 - 043421

ER -