Third-order nonlinearity OPO: Schmidt Mode Decomposition And Tripartite Entanglement

TL;DR

This paper explores the quantum properties of light in third-order nonlinear optical parametric oscillators, demonstrating bipartite and tripartite entanglement above threshold, with implications for integrated photonic devices.

Contribution

It introduces a detailed analysis of Schmidt mode decomposition and entanglement in third-order nonlinearity OPOs, highlighting their quantum features despite competing effects.

Findings

Bipartite entanglement predicted above threshold

Tripartite entanglement predicted above threshold

Relevance for CMOS-compatible on-chip OPOs

Abstract

We investigate quantum properties of light in optical parametric oscillators (OPOs) based on four-wave mixing gain in media with third-order non-linearities. In spite of other competing $\chi^{(3)}$ effects, such as phase modulation, bipartite and tripartite entanglement are predicted above threshold. These findings are relevant for recent implementations of CMOS-compatible on-chip OPOs.