State Engineering via Nonlinear Interferometry with Linear Spectral Phases
Quantum Physics
2026-05-19 v2 Optics
Abstract
Many protocols within quantum cryptography, communications, and computing require the ability to generate entangled states as well as spectral qudits. Nonlinear interferometry is a viable way to engineer these complex quantum states of light. However, it is difficult to achieve a high level of control over spectral correlations. Here, we present a protocol utilizing a nonlinear interferometer with linear spectral phases that can generate both high-dimensional spectral qudits and high-dimensional entangled states. We model the effect of loss and loss of overlap on interference visibility and thereby on the states generated.
Cite
@article{arxiv.2601.12173,
title = {State Engineering via Nonlinear Interferometry with Linear Spectral Phases},
author = {Cody Charles Payne and Elaganuru Bashaiah and Markus Allgaier},
journal= {arXiv preprint arXiv:2601.12173},
year = {2026}
}