[19a-E206-1~10] 3.15 Silicon photonics

[19a-E206-4] An Integrated Silicon Photonic Nonlinear Interferometer

〇Takafumi Ono^1,2,3, Gary Sinclair³, Damien Bonneau³, Mark Thompson³, Jonathan Matthews³, John Rarity³ (1.NICT, 2.JST PRESTO, 3.Bristol Univ.)

Keywords:Quantum information science, Silicon photonics, Nonlinear optics

Photonic integrated circuits represents a promising platform for applying quantum information science to areas such as quantum computation, quantum communication, and quantum metrology. While the linear optical approach has greatly contributed to this field, it is often possible to improve the functionalit and scalability by making use of nonlinear processes. In this context, we demonstrate a nonlinear interferometer in the pair-photon generation regime by using spontaneous four-wave mixing in an integrated silicon photonic chip. We observe a nonlinear interference in the production rate of photon pairs generated from two different four wave mixing waveguides. We obtain an interference visibility of 96.8%.