[16p-A405-1~15] 3.9 Optical quantum physics and technologies (formerly 3.10)

△ [16p-A405-12] Single photon emission from single defect center in hexagonal boron nitride by long wavelength excitation

〇Yudai Okashiro¹, Konosuke Shimazaki¹, Kazuki Suzuki¹, Hideaki Takashima¹, Igor Aharonovich², Shigeki Takeuchi¹ (1.Kyoto Univ., 2.University of Technology Sydney)

Keywords:Hexagonal boron nitride, Single photon source

Hexagonal boron nitride(hBN) defect centers have attracted considerable attention as single-photon source operating at room temperature recently. We have reported dipole orientation analysis of single defect centers in hBN and hybrid devices of hBN defect centers with nano-optical fibers and nano-optical fibers with optical resonators. In the present study, we report that we observed a sharp peak emission spectrum with reduced background when hBN was excited by using a light with a wavelength longer than the emission wavelength.