Generation of hyper-entangled states in strongly coupled topological defects
Abstract
We investigate spontaneous parametric downconversion (SPDC) in a waveguide array supporting two strongly coupled topological guided modes. We show that it is possible to generate photon pairs that are hyper-entangled in energy and path. We study the state robustness against positional disorder of the waveguides, in terms of Schmidt number (SN), fidelity, and density matrix. We show that quantum correlations are in general robust due to the peculiar interplay between structure topology and second-order nonlinear interaction.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 30, 2021
- Source ID
- 10.1364/ol.425278
Entities
People
- J. E. Sipe
- Marco Liscidini
- Nicola Bergamasco
Organizations
- Aviation and Missile Research, Development, and Engineering Center
- Ministry of Education, Universities and Research
- Natural Sciences and Engineering Research Council
- University of Pavia
- University of Toronto