Quantum-coherence-enhanced surface plasmon amplification by stimulated emission of radiation.
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.
Texas A&M University, College Station, Texas 77843, USA. kdorfman@uci.edu
Konstantin E
KE
Dorfman
Pankaj K
PK
Jha
Dmitri V
DV
Voronine
Patrice
P
Genevet
Federico
F
Capasso
Marlan O
MO
Scully