Montréal Quantum Photonics Seminar Series
📍 J. Armand Bombardier J-1035, Polytechnique Montréal
🗓️ Monday, February 5th/2024
🕜 15:30
Towards the generation of photon triplets
with third-order parametric down-conversion
Milica Banic
National Research Council of Canada.
Abstract: Sources of
non-classical light based on photon-pair generation processes play an important
role in photonic quantum technology, but they are limited in their capabilities.
For example, the generation of important resources – such as non-Gaussian
states – requires combining these conventional sources with schemes that
involve postselection. But one can also envision implementing different
parametric processes that do not share these limitations. One candidate is
third-order parametric down-conversion (TOPDC), a triplet generation process that
could directly generate non-Gaussianity and multipartite entanglement. TOPDC is
challenging to implement: So far, no experimental demonstration of optical
TOPDC has been reported. I will argue that exploring integrated platforms for
TOPDC is a promising path forward. By comparing the scaling of TOPDC generation
rates in a waveguide and a microring resonator, I will identify the important
characteristics of a prospective TOPDC platform. A sample calculation will show
that a demonstration of integrated TOPDC appears to be feasible with the
current fabrication technology. I will then discuss some challenges in going
beyond a first demonstration of triplet generation, and toward the generation
of useful photonic resources using this process.
Bio: Milica Banic is a research associate in the
group of Khabat Heshami at the National Research Council of Canada. In 2023 she
completed a PhD at the University of Toronto, where she worked with John Sipe.
Her research concerns the generation of non-classical states of light, with a focus
on integrated platforms.
Contact: nicolas.quesada@polymtl.ca
