[20a-A404-1~9] 3.9 Optical quantum physics and technologies (formerly 3.10)

▲ [20a-A404-4] Highly effective broadband frequency correlated photon-pair generation using chirped quasi-phase matching slab waveguide

〇(PC)Bo Cao¹, Kyohei Hayama¹, Ryo Okamoto¹, Mamoru Hisamitsu², Katsuhiko Tokuda², Sunao Kurimura³, Shigeki Takeuchi¹ (1.Kyoto Univ., 2.Shimadzu Corp, 3.NIMS)

Keywords:quasi-phase matching, slab waveguide, photon pair source

Frequency entanglement is a important phenomenon that brings quantum properties to classical applications. In a previous work, we reported a demonstration of high efficiency and broadband frequency correlated photon pair collinear generation using a ridge-waveguide- based chirped quasi-phase matching (QPM) device. Because collinearly emitted photon pairs cannot be employed directly in applications such as QOCT, we developed a slab waveguide based chirped QPM device for highly efficient ultra-broadband frequency correlated photon generation. With a high generation efficiency and a boardband spectral bandwidth, the photons were emitted into different spatial modes. This device can be employed as a photon pair source for high-resolution and high speed QOCT.