We present a novel yet simple approach to produced multiple entangled photon pairs through spontaneous parametric downconversion. We have developed Gaussian masks to subdivide the pump beam before passing it through a nonlinear medium. In this way, we are able to observe simultaneous separate down-converted emission cones with spatial overlap. The technique we employ can be used to greatly increase the dimensionality of entangled photonic systems generated from spontaneous parametric down conversion, affording greater scalability to optical quantum computing than previously explored.
@article{arxiv.2105.05291,
title = {Multi-qubit production in spontaneous parametric down conversion},
author = {Phillip Heitert and Finn Buldt and Pascal Bassene and Moussa N'Gom},
journal= {arXiv preprint arXiv:2105.05291},
year = {2021}
}
Comments
4 pages, 5 figures, submitted to Phys. Rev. X Quantum