Silicon photonic waveguide arrays support multiple protected entangled light states simultaneously

https://www.eurekalert.org/news-releases/1121562

"entangling multiple states comes up against hard limit when trying to scale-up... overcome using topological modes making entangled states immune to system's imperfections/ noise... much larger capacity for encoding quantum data, critical for large-scale industrial use... instead of evaluating 10 million routes 1 by 1, quantum model using this technology evaluates all instantaneously... quantum computers, medical imaging, GPS-independent navigation, cybersecurity"