We now consider the situation where CNP donors are coupled to plasmonic metal nanoparticle acceptors, as illustrated in Figure ; such assemblies may be realized using technology like DNA templating. Our aim here is to explore the possibility of CNPs and plasmonic nanoparticles to form assemblies that can facilitate strong coupling between their resonances. In this context, strong coupling occurs when the interaction potential (V int ) between the two resonances is large compared decay rates of the resonances. Analysis of coupled two-level sys- tems leads to the following rule of thumb: coupling is strong when 4V int > h(γ 1 + γ 2 ), where γ 1 and γ 1 represent the relaxation rates for the two system components. The coupling potential is defined as