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The resonance fluorescence spectra of N two-level quantum systems located arond spherical nanoantennaстатья
- Авторы: Vladimirova Yu V., Klimov V.V., Pastukhov V.M., Zadkov V.N.
- Сборник: Proceedings of the International Conference on Advanced Laser Technologies
- Год издания: 2012
- Место издания: Open Publishing Bern
- Первая страница: 1
- Последняя страница: 7
- DOI: 10.12684/alt.1.85
- Аннотация: Modification of the resonance fluorescence spec- trum of a two-level atom driving by a laser monochromatic field in the close proximity of a plasmonic nanostructure (metal sphere) is studied in detail. It is shown that one can control this spectrum varying four key parameters: distance between the atom and the nanosphere, atom’s lo- cation around the nanosphere, the radius of the nanosphere, and polarization of the incident ra- diation. These parameters affect the local field enchancement, transition frequency shift and the modification of the radiative decay rate of the atom interacting with the nanosphere, which lead to modification of the resonance fluorescence spec- trum of the atom (frequency shift of the satellite lines in the Mollow-type triplet, widths of the lines, the spectrum intensity) by contrast with that one in free space. The permittivity of the metal the nanosphere is made of is also an additional param- eter, which defines the nonradiative decay. The lat- ter in combination with other parameters allows to continuously control the transition from resonance fluorescence enhancement to its quenching. The calculation results are generalized to the case of N two-level atoms, distributed around the nanopar- ticle in the close proximity of its surface. The calculations were performed for different positions of the detector relative to the system nanoparticle- atom(s).
- Добавил в систему: Задков Виктор Николаевич