Cavity quantum electrodynamics on a nanocapillay fiber using a composite photonic crystal symmetric cavity

We report the cavity quantum electrodynamics conditions using a composite photonic crystal symmetric cavity (CPCSC) on an optical nanocapillary fiber (NCF). The CPCSC is formed by combining the NCF and the symmetric defect mode nano-grating. The maximum channeling efficiency up to 87% is realized by placing the single quantum emitter at the anti-node position of the CPCSC. The current platform paves the way for manipulating single photons with applications in quantum technology.