[15p-K309-1~12] 3.9 Optical quantum physics and technologies

3:15 PM - 3:30 PM JST(6:15 AM - 6:30 AM UTC)

[15p-K309-7] Generation of Polarization Entangled Photon Pairs in the Mid-infrared and Visible regions

〇(D)Haruya Hirota¹, Koichiro Tanaka¹ (1.Kyoto Univ.)

Keywords:

quantum correlation,nonlinear optics,infrared

In the near-infrared (NIR) region, research on the generation, manipulation, and detection of entangled photons with nearly degenerate frequencies has matured, leading to numerous practical achievements. In contrast, the generation and detection of entangled photons with significantly different frequencies, such as those in the mid-infrared (MIR) and visible regions, remain underdeveloped. In this study, we realized the generation of polarization-entangled photon pairs spanning the MIR and visible regions using a spontaneous parametric down-conversion (SPDC) process under Type-II phase-matching conditions in a PPSLT crystal.