Strong Purcell effect observed in single thick shell CdSe/CdS   nanocrystals coupled to localized surface plasmons
  High quality factor dielectric cavities designed to a nanoscale accuracy are mostly used to increase the spontaneous emission rate of a single emitter. Here we show that the coupling, at room temperature, between thick shell CdSe/CdS nanocrystals and random metallic films offers a very promising alternative approach. Optical modes confined at the nanoscale induce strong Purcell factors reaching values as high as 60. Moreover the quantum emission properties can be tailored: strong antibunching or radiative biexcitonic cascades can be obtained with high photon collection efficiency and extremely reduced blinking. 
D. Canneson, I. Mallek-Zouari, S. Buil, X. Qu\'elin, C. Javaux, B.   Mahler, B. Dubertret, J.-P. Hermier
cond-mat.mes-hall