Multi-Order Quasi-Phase Matching for Generation of Pure Heralded Single Photons

Authors :: Fumihiro Kaneda
Jo Oikawa
Masahiro Yabuno
Fumihiro China
Shigehito Miki
Hirotaka Terai
Yasuyoshi Mitsumori
Keiichi Edamatsu
Source :: Quantum 2.0 Conference and Exhibition.
Publication Year :: 2022
Publisher :: Optica Publishing Group, 2022.
Abstract: We experimentally demonstrate multi-order quasi-phase-matching conditions for spectral shaping of photon pairs produced by spontaneous parametric downconversion. Incorporated with a group-velocity matching condition, our multi-order quasi-phase-matching scheme generates single photons high spectral purity.