Degenerate squeezing in a dual-pumped integrated microresonator: parasitic processes and their suppression

Abstract

Using a general Hamiltonian treatment, we theoretically study the generation of degenerate quadrature squeezing in a dual-pumped integrated microring resonator coupled to a waveguide. Considering a dual-pump four-wave mixing configuration in an integrated ${\text{Si}}_3{\text{N}}_4$ platform, and following the coupled-mode theory approach, we investigate the effects of parasitic quantum nonlinear optical processes on the generation of squeezed light. Considering five resonance modes in this approach allows us to include the most important four-wave mixing processes involved in such a configuration. We theoretically explore the effects of the pump detunings on different nonlinear processes and show that the effects of some of the parasitic processes are effectively neutralized by symmetrically detuning the two pumps. This yields a significant enhancement in the output squeezing quality without physically changing the structure, but suffers from the trade-off of requiring substantially higher pump power for a fixed target level of squeezing.

References in corpus (7)

• 1 Low power continuous-wave nonlinear optics in silica glass integrated waveguide structures
• Quantum circuits with many photons on a programmable nanophotonic chip
• Squeezed-Light Optical Magnetometry
• Relative intensity squeezing by four-wave mixing with loss: an analytic model and experimental diagnostic
• Optimal Squeezing in Resonance Fluorescence via Atomic-State Purification
• Parasitic Photon-Pair Suppression via Photonic Stop-Band Engineering
• Nonlinear optical magnetometry with accessible in situ optical squeezing

Cited by in corpus (6)

• Resonant and non-resonant integrated third order parametric down-conversion
• Bichromatic four-wave mixing and quadrature-squeezing from biexcitons in atomically thin semiconductor microcavities
• Optimization of the degenerate optical parametric oscillations threshold in bichromatically pumped microresonator
• Hidden quantum correlations in cavity-based quantum optics
• Photon triplets from integrated microrings: A path towards deterministic non-Gaussianity on a chip
• Efficient quadrature-squeezing from biexcitonic parametric gain in atomically thin semiconductors