期刊
PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS
卷 12, 期 5, 页码 387-397出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.photonics.2014.06.001
关键词
Plasmonics; Metamaterials; Spontaneous emission; Two-level system
资金
- RFBR Grants [12-02-01093, 13-02-00407, 13-02-92660]
- Dynasty Foundation
- NSF [DMR-1312707]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1312707] Funding Source: National Science Foundation
We consider the relaxation of an excited two-level system (TLS) positioned near a spherical plasmonic nanoparticle (NP). The transition frequency of the TLS is assumed to coincide with the frequency of the condensation point of NP plasmonic resonances. We show that the relaxation of the TLS excitation is a two-step process. Following an initial exponential decay, the TLS breaks in to Rabi oscillations. Depending upon the distance between the TLS and NP, the probability of the TLS being in the excited state exhibits either chaotic or nearly regular oscillations. In the latter case, the eigenfrequency of the TLS-NP system coincides with one of NP multipole modes. (C) 2014 Elsevier B.V. All rights reserved.
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