99th RQC Seminar

• 講演者

  Dr. Edwin Ng
  ( PHI Research Lab. NTT, US )

• 日程

  2023年12月4日（月） 16：00-17：00

• 開催場所

  ハイブリッド（ZOOM・ 研究本館3階 セミナー室(345-347) C01）

• 講演タイトル

  Navigating the classical-to-quantum transition in ultrafast nonlinear nanophotonics

• お問合せ

  rqc_info[at]ml.riken.jp

講演概要
Recent technological advances in nonlinear nanophotonic platforms like thin-film lithium niobate have brought the operation of nonlinear-optical devices tantalizingly close to the few-photon regime. In this talk, I survey some interesting quantum phenomena that could emerge in such devices within the near future, as operational energy scales move from the classical regime of millions of photons or more to the mesoscopic regime of dozens to hundreds. First, I describe a general framework for modeling the nonlinear dynamics of broadband Gaussian quantum noise and entanglement in femtosecond pulses, with examples from supercontinuum generation and saturated parametric generation [1]. Building on this semiclassical framework, we then examine pump depletion in squeezed light generation as a useful case study in understanding how non-Gaussian physics naturally emerge in ultrafast pulse propagation [2]. The study of such mesoscopic physics has the potential to stimulate new research directions in all-optical information processing, sensing, and computation.
[1] E. Ng, R. Yanagimoto et al, arXiv:2307.05464 [quant-ph].
[2] R. Yanagimoto, E. Ng et al, Optica 9, 379 (2022).