A 2 nm Breakthrough: Dr. Ko-Cheng Fang Ushers in the Era of Photonic Quantum Chips

Semiconductor Review | Tuesday, December 09, 2025

Dr. Ko-Cheng Fang, CEO of LongServing Technology, has recently developed a revolutionary 2 nm X-ray short-wave photonic-chip material, a discovery with epoch-making significance. This material can replace the copper interconnects used in semiconductor ICs, eliminate the complex copper-embedding process, and enable photonic chips with built-in light pathways.

Key Value of the “2 nm X-ray Short-Wave Photonic-Chip Material”

Current silicon photonics, using InP materials, operate at wavelengths of 1310–1550 nm, which are far larger than the 14 nm copper lines used in electronic chips. As a result, photonics can only be used for data transmission and cannot replace copper for computation.
Quantum dots (300–700 nm) also suffer from the same limitation—they are mainly used in display technologies and cannot be scaled down to 14 nm to form chip-level optical pathways.

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Dr. Fang’s 2 nm X-ray photonic material breaks all existing physical barriers:

• A true 2 nm wavelength—smaller than 14 nm copper lines—capable of fully replacing metal interconnects and forming chip-scale nanophotonic pathways
• Boosts computational performance by up to 1000×
• A completely new material that does not exist in nature, created independently by Dr. Fang

This achievement carries Nobel-Prize-level scientific significance. It represents a historic step forward—from electronic chips to photonic chips—and opens a new era of light-based computation. With photonic AI, Dr. Fang is reshaping the future through an invention that has the potential to change the world.

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