AI No Longer Calculates with Electricity -- US Startup Lightmatter Announces High-Performance Photonic Superchip, Lightmatter Opening the Light Era: The next-generation battlefield of AI semiconductors is the chip-to-chip interconnect. To solve the bottleneck of data flow, US startup Lightmatter made photons the protagonist of data communication instead of electricity. Their technology using photons instead of electricity presents the possibility of fundamentally restructuring the AI computing paradigm. The interconnect bottleneck: as AI models grow to hundreds of billions of parameters, the limitation is not processor speed but the bandwidth and energy cost of moving data between chips; current electrical interconnects (NVLink, PCIe) are approaching physical limits of what copper wire can deliver in terms of bandwidth and energy efficiency. Lightmatter photonic interconnect approach: using light rather than electricity to transmit data between chips enables dramatically higher bandwidth (light can carry more information per second than electrical signals); lower latency (light travels faster than electrons in copper); lower energy consumption per bit transmitted (photons do not generate heat like electron current through resistance). The practical challenge: integrating photonic interconnects with existing electronic chip architectures requires new manufacturing processes and chip design methodologies; the transition from electrical to photonic interconnect is not a drop-in replacement but a fundamental rearchitecting of how chips are connected; Lightmatter is developing both the photonic interconnect technology and the chip packaging innovations needed to integrate it with existing AI accelerators.