Dispersion-engineered χ(2) nanophotonics: a flexible tool for nonclassical light. (23rd September 2021)

• Record Type: Journal Article
• Authors: Jankowski, Marc; Mishra, Jatadhari; Fejer, M M
• Is Part Of: JPhys photonics. Volume 3:Number 4(2021)
• Publication Date: 2021-09-23
• Subjects: nonlinear optics -- photonics -- quantum optics; Photonics -- Periodicals; 621.365
• DOI: 10.1088/2515-7647/ac1729
• Languages: English
• ISSNs: 2515-7647

Abstract

Abstract: This article reviews recent progress in quasi-phasematched χ ( 2 ) nonlinear nanophotonics, with a particular focus on dispersion-engineered nonlinear interactions. Throughout this article, we establish design rules for the bandwidth and interaction lengths of various nonlinear processes, and provide examples for how these processes can be engineered in nanophotonic devices. In particular, we apply these rules towards the design of sources of non-classical light and show that dispersion-engineered devices can outperform their conventional counterparts. Examples include ultra-broadband optical parametric amplification as a resource for measurement-based quantum computation, dispersion-engineered spontaneous parametric downconversion as a source of separable biphotons, and synchronously pumped nonlinear resonators as a potential route towards single-photon nonlinearities.