| （英） |
To realize next-generation quantum networks, fiber-coupled single photons must be generated at sufficiently high rate (≥1 GHz), but many quantum emitters in wide use have a spontaneous emission rate of about 10 MHz. Recently, nanofiber resonators have made it possible to enhance the emission rate of quantum emitters by Purcell effect, but sophisticated nanofabrication is necessary to create the resonator, and strict alignment between emitter and resonator is required. In this study, we report Purcell enhancement of the emission of quantum dots coupled to a fiber using only dielectric (silica) micro-cylinders without localized resonant modes. Since the creation of nanostructures and the difficult alignment of the structure and emitter are not required, it is expected to benefit single-photon sources for telecommunications. |