[19p-PA7-1~29] 3.12 ナノ領域光科学・近接場光学

▲ [19p-PA7-12] Towards investigation of light-matter interactios of single quantum emitters using a multimode nanofiber cavity

〇(D)Maki Maeda¹、Wenfang Li¹、Jinjin Du¹、Viet Giang Truong¹、Sile Nic Chormaic¹ (1.OIST)

キーワード：nanofiber, optical cavity, single quantum emitter

Here we present the experimental realization of an optical nanofiber-based cavity consist of a combination of 1-D photonic crystal and Bragg grating structures. The cavity is composed of a periodic, triplex air-nano-cube arrays at the nanofiber waist, with the nanofiber designed as single mode. The transmission spectrum for a very short periodic structure of the system shows a Q-factor of ~784 +- 87. Meanwhile, a theoretical study of such a cavity with a narrow air-filled groove suggests a significantly high Purcell factor for single quantum emitters inside the groove. The coupling efficiency of single quantum emitter into the guided mode of the cavity is estimated to reach up to 80%.
Such a system could be modified to use a multimode ultrathin fiber in order to investigate interactions between single quantum emitters and higer order modes. This novel cavity design shows a lot of potential in the fileds of nanophotonics and quantm information applications.