The entanglement of atoms with two-photon transitions in the presence of ac Stark shift of energy levels
In this paper, we investigated the dynamics of atomic entanglement in a quantum system consisting of two identical two-level atoms (qubits) resonantly interacting with a mode of a thermal cavity field through degenerate two-photon transitions, in the presence of a Stark energy level shift. An analyt...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Povolzhskiy State University of Telecommunications & Informatics
2019-03-01
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| Series: | Физика волновых процессов и радиотехнические системы |
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| Online Access: | https://journals.ssau.ru/pwp/article/viewFile/7494/7347 |
| _version_ | 1827576162517254144 |
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| author | E.K. Bashkirov M.O. Guslyannikova |
| author_facet | E.K. Bashkirov M.O. Guslyannikova |
| author_sort | E.K. Bashkirov |
| collection | DOAJ |
| description | In this paper, we investigated the dynamics of atomic entanglement in a quantum system consisting of two identical two-level atoms (qubits) resonantly interacting with a mode of a thermal cavity field through degenerate two-photon transitions, in the presence of a Stark energy level shift. An analytical expression is obtained for the atom entanglement (negativity) parameter for separable and entangled initial states of atoms. The influence of the Stark shift on the degree of atom-atom entanglement is considered. It is established that the Stark shift leads to a significant increase in the degree of atom entanglement in the case of separable initial states of atoms and to stabilization of atomic entanglement in the case of entangled initial states of atoms. |
| first_indexed | 2024-03-08T21:08:11Z |
| format | Article |
| id | doaj.art-1e208be2b7d04b559db0ba0b290bd489 |
| institution | Directory Open Access Journal |
| issn | 1810-3189 2782-294X |
| language | English |
| last_indexed | 2024-03-08T21:08:11Z |
| publishDate | 2019-03-01 |
| publisher | Povolzhskiy State University of Telecommunications & Informatics |
| record_format | Article |
| series | Физика волновых процессов и радиотехнические системы |
| spelling | doaj.art-1e208be2b7d04b559db0ba0b290bd4892023-12-22T10:31:40ZengPovolzhskiy State University of Telecommunications & InformaticsФизика волновых процессов и радиотехнические системы1810-31892782-294X2019-03-01223364310.18469/1810-3189.2019.22.3.36-437037The entanglement of atoms with two-photon transitions in the presence of ac Stark shift of energy levelsE.K. Bashkirov0M.O. Guslyannikova1Samara National Research UniversitySamara National Research UniversityIn this paper, we investigated the dynamics of atomic entanglement in a quantum system consisting of two identical two-level atoms (qubits) resonantly interacting with a mode of a thermal cavity field through degenerate two-photon transitions, in the presence of a Stark energy level shift. An analytical expression is obtained for the atom entanglement (negativity) parameter for separable and entangled initial states of atoms. The influence of the Stark shift on the degree of atom-atom entanglement is considered. It is established that the Stark shift leads to a significant increase in the degree of atom entanglement in the case of separable initial states of atoms and to stabilization of atomic entanglement in the case of entangled initial states of atoms.https://journals.ssau.ru/pwp/article/viewFile/7494/7347identical two-level atomstwo-photon transitionsthermal fieldac stark shiftentanglement control and operation |
| spellingShingle | E.K. Bashkirov M.O. Guslyannikova The entanglement of atoms with two-photon transitions in the presence of ac Stark shift of energy levels Физика волновых процессов и радиотехнические системы identical two-level atoms two-photon transitions thermal field ac stark shift entanglement control and operation |
| title | The entanglement of atoms with two-photon transitions in the presence of ac Stark shift of energy levels |
| title_full | The entanglement of atoms with two-photon transitions in the presence of ac Stark shift of energy levels |
| title_fullStr | The entanglement of atoms with two-photon transitions in the presence of ac Stark shift of energy levels |
| title_full_unstemmed | The entanglement of atoms with two-photon transitions in the presence of ac Stark shift of energy levels |
| title_short | The entanglement of atoms with two-photon transitions in the presence of ac Stark shift of energy levels |
| title_sort | entanglement of atoms with two photon transitions in the presence of ac stark shift of energy levels |
| topic | identical two-level atoms two-photon transitions thermal field ac stark shift entanglement control and operation |
| url | https://journals.ssau.ru/pwp/article/viewFile/7494/7347 |
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