optical-computing

University of Pennsylvania researchers demonstrated strongly nonlinear exciton-polaritons that switch optical signals at 4 femtojoules—a record low for 2D polariton systems—using a MoSe₂ monolayer inside a photonic crystal nanocavity.

Shanghai-based optical computing firm Lightelligence raised about US$306 million on April 28, 2026 in a Hong Kong IPO whose retail tranche was oversubscribed nearly 5,800 times, opening at HK$880 versus an HK$183.20 offer price for a roughly HK$81.5 billion market capitalization at the open.

A prototype chip encodes neural network weights directly into nanoscale photonic structures, classifying biomedical images with up to 99 percent accuracy on a picosecond timescale while generating virtually no resistive heat.