Journal article

Cavity QED analysis of an exciton-plasmon hybrid molecule via the generalized nonlocal optical response method

Harini Hapuarachchi, Malin Premaratne, Qiaoliang Bao, Wenlong Cheng, Sarath D Gunapala, Govind P Agrawal

Physical Review B | AMER PHYSICAL SOC | Published : 2017


A metal nanoparticle coupled to a semiconductor quantum dot forms a tunable hybrid system which exhibits remarkable optical phenomena. Small metal nanoparticles possess nanocavitylike optical concentration capabilities due to the presence of strong dipolar excitation modes in the form of localized surface plasmons. Semiconductor quantum dots have strong luminescent capabilities widely used in many applications such as biosensing. When a quantum dot is kept in the vicinity of a metal nanoparticle, a dipole-dipole coupling occurs between the two nanoparticles giving rise to various optical signatures in the scattered spectra. This coupling makes the two nanoparticles behave like a single hybri..

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Awarded by Australian Research Council

Awarded by ARC

Funding Acknowledgements

H.H. would like to thank the members of A chi L at Monash University including D. Weeraddana and S. Mallawaarachchi for their encouragement and support. The work of H.H. is supported by the Monash University Institute of Graduate Research, and the work of M.P., S.D.G., and G.P.A. is supported by the Australian Research Council through its Discovery Grant No. DP140100383. Q.B. would like to acknowledge the support from ARC DP140101501, FT150100450, and CE170100039.