collaborators

5 papers

physics.optics2026

Joint spectral characterization of SPDC photon pairs near 2 m in (Al)GaAs-on-insulator waveguides

Alexandre Z. Leger, Emil Z. Ulsig, Samuel E. Fontaine +8

Integrated photon-pair sources are a core component of chip-based quantum computing, communication, and metrology. Although such sources have been demonstrated at conventional tele…

quant-ph2026

Photon triplets from integrated microrings: A path towards deterministic non-Gaussianity on a chip

Samuel E. Fontaine, J. E. Sipe, Marco Liscidini +1

We propose cascaded spontaneous four-wave mixing (SFWM) in microring resonators as a scalable and efficient approach for directly generating non-Gaussian states of light. Focusing…

physics.optics2026

Coherent control of photon pairs via quantum interference between second- and third-order quantum nonlinear processes

Alessia Stefano, Samuel E. Fontaine, J. E. Sipe +1

Genuine quantum interference between independent nonlinear processes of different order provides a route to coherent control that cannot be reduced to a classical field interferenc…

quant-ph2025

Non-Gaussian states via pump-depleted SPDC

Colin Vendromin, Samuel E. Fontaine, J. E. Sipe

We develop a model for non-Gaussian state generation via spontaneous parametric down-conversion (SPDC) in InGaP microring resonators. The nonlinear Hamiltonian is written in terms…

quant-ph2025

Photon pair generation via down-conversion in III-V semiconductor microrings: modal dispersion and quasi-phase matching

Samuel E. Fontaine, Colin Vendromin, Trevor J. Steiner +7

We explore how III-V semiconductor microring resonators can efficiently generate photon pairs and squeezed vacuum states via spontaneous parametric down-conversion by utilizing the…