[21p-P18-1~14] 3.9 Optical quantum physics and technologies (formerly 3.10)

[21p-P18-3] Detection of simultaneously generated quantum entangled photon pairs
by nonlinear interferometer

〇(M2)Haruya Hirota¹, Hojo Masayuki¹, Tanaka Koichiro¹ (1.Dept. of Physics, Kyoto Univ.)

Keywords:

correlated photon pairs,nonlinear interference,infrared

Infrared quantum absorption spectroscopy (IRQAS), which uses quantum interference between spontaneous parametric down convertion processes, has attracted attention as a way to solve the technical limitations of the detection sensitivity limit in the infrared region. Periodically poled MgO-doped LiTaO3 (PPSLT) crystals are capable of simultaneously generating two pairs of visible-mid-IR quantum correlated photon pairs. In this study, two types of mid-IR spectra actually generated simultaneously from PPSLT were observed by IRQAS. The broadening of the mid-IR spectra will also be discussed in the presentation.