Scientists develop molecular qubit, bringing quantum internet closer

Technology Nov 23, 2025

Scientists have just created a molecular qubit that can talk to regular fiber-optic networks—a big step toward building the quantum internet.
This tech could make sharing data worldwide way more secure by letting quantum devices connect over the same cables we already use.

How it works and why it matters

The new qubit is made with erbium-based molecules, so it can store information magnetically and send it as light signals at telecom wavelengths (meaning less signal loss).
Lab tests show it works with today's telecom infrastructure, and if integrated with silicon chips, it could help link up quantum computers—bringing real-world quantum networks closer than we thought.