Nonlinear Photon Pair Generation in a Highly Dispersive Medium

TL;DR

This paper demonstrates TM polarized photon pair generation in silicon resonators with high dispersion, enabling phase matching in dispersive media and advancing integrated quantum photonics.

Contribution

It introduces a method for TM polarization photon pair production in highly dispersive silicon resonators, overcoming previous phase matching limitations.

Findings

Achieved photon pair rates above 2.8 kHz

Measured a heralded second order correlation of 0.0442

Enabled phase matching in highly dispersive media

Abstract

Photon pair generation in silicon photonic integrated circuits relies on four wave mixing via the third order nonlinearity. Due to phase matching requirements and group velocity dispersion, this method has typically required TE polarized light. Here, we demonstrate TM polarized photon pair production in linearly uncoupled silicon resonators with more than an order of magnitude more dispersion than previous work. We achieve measured rates above 2.8 kHz and a heralded second order correlation of $g^{(2)}(0) = 0.0442 \pm 0.0042$. This method enables phase matching in dispersive media and paves the way for novel entanglement generation in silicon photonic devices.