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The radiative decay of quantum dot (QD) excitons into surface plasmons in acylindrical nanowire is investigated theoretically. Maxwell's equations withappropriate boundary conditions are solved numerically to obtain the dispersionrelations of surface plasmons. The radiative decay rate of QD excitons is foundto be greatly enhanced at certain values of the exciton bandgap. Analogous tothe decay of a two-level atom in the photonic crystal, we first point out thatsuch an enhanced phenomenon allows one to examine the non-Markovian dynamics ofthe QD exciton. Besides, due to the one dimensional propagating feature ofnanowire surface plasmons, remote entangled states can be generated viasuper-radiance and may be useful in future quantum information processing.

Non-Markovian band-edge effect and entanglement generation of quantum dot excitons coupled to nanowire surface plasmons