Development

LightGen runs generative tasks entirely in light

development2025-12-20

Claim

Chinese researchers demonstrated LightGen, an all-optical chip integrating millions of photonic neurons with energy efficiency two orders of magnitude above electronic chips.

Reported metric: ~100x efficiency

Reporting date: 2025-12-20 (not necessarily the event date)

Sources

Attribution and reporting linked by this record; links do not imply independent verification.

Welcome to December 20, 2025 (theinnermostloop.substack.com)

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About

LightGen photonic chip

Reported in

Welcome to December 20, 2025

Actor

Government of China

Evidence for

Supersedes

Reprogrammable 2D waveguides run neural inference in light

Referenced by

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Citation formatCitation text

LightGen runs generative tasks entirely in light
Innermost Loop KB — secondary record
Reporting date: 2025-12-20
KB permalink: https://nicholsn.github.io/innermost-loop-kb/developments/2025-12-20-lightgen-optical-chip
Claim: Chinese researchers demonstrated LightGen, an all-optical chip integrating millions of photonic neurons with energy efficiency two orders of magnitude above electronic chips.
Attributed sources:
- Welcome to December 20, 2025 — https://theinnermostloop.substack.com/p/welcome-to-december-20-2025
This citation does not imply independent verification of linked-source claims.

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