Tech

Hybrid light-matter quasiparticles promise faster, cooler AI chips.

May 27, 2026 · From the archive, written in the Professor's voice before our October 2026 redesign from sciencedaily.com

What happened

Engineers at the University of Pennsylvania coupled photons with excitons inside a 2-D perovskite microcavity, forming polaritons whose group velocity reaches 0.8 c. Logic gates built from these polaritons execute matrix-vector products in 180 femtoseconds while dissipating 4 attojoules per operation.

Why it matters

You begin viewing computation as a wave phenomenon rather than an electron shuffle. The design loop now includes optical path lengths and cavity tuning instead of transistor sizing alone.

Who's doing it

Penn’s Quantum Photonics Group fabricated a 64-by-64 polariton array that performed MNIST inference at 1.2 picojoules per image, two orders of magnitude below the 120 picojoules of a comparable electronic ASIC.

Try it

1. Download the open-source polariton-sim package at https://github.com/pennqpg/polariton-sim.
2. Define a cavity geometry and run polariton.propagate(input_vector, steps=50).
3. Compare the simulated energy per MAC against your current electronic baseline to quantify the projected gain.

Read the original at sciencedaily.com