期刊
PHYSICAL REVIEW LETTERS
卷 111, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.111.043601
关键词
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资金
- National Science Foundation [PHY-1241032, EEC-0540832]
- Robert A. Welch Foundation [A-1261]
- Herman F. Heep and Minnie Belle Heep Texas A&M University Endowed Fund
- Division Of Physics
- Direct For Mathematical & Physical Scien [1241032] Funding Source: National Science Foundation
We investigate surface plasmon amplification in a silver nanoparticle coupled to an externally driven three-level gain medium and show that quantum coherence significantly enhances the generation of surface plasmons. Surface plasmon amplification by stimulated emission of radiation is achieved in the absence of population inversion on the spasing transition, which reduces the pump requirements. The coherent drive allows us to control the dynamics and holds promise for quantum control of nanoplasmonic devices.
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