Quantum internet inches closer thanks to new chip — it helps beam quantum signals over real-world fiber optic cables– www.livescience.com

Quantum internet inches closer thanks to new chip — it helps beam quantum signals over real-world fiber optic cables– www.livescience.com
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Excerpt:

Scientists have sent quantum signals over standard fiber-optic cables using the same connectivity that powers today’s web, in what could be a major step towards a working quantum internet.

In a study published Aug. 28 in the journal Science, researchers used a custom-built quantum chip to package quantum data alongside a standard optical signal and transmit them over commercial infrastructure.

The breakthrough marks the first time quantum data has been sent using Internet Protocol (IP), the same communications standard that underpins today’s broadband networks. The results suggest that quantum communications could run on networks already in use, rather than needing dedicated infrastructure.

“Unlike earlier experiments that required isolated, lab-based setups or specialized infrastructure, this approach integrates quantum communication into real-world networks for the first time,” senior study author Liang Feng, professor of materials science and electrical engineering at the University of Pennsylvania, told Live Science in an email.

“Our Q‑Chip enables control of quantum signals and classical signals, so they travel together over the same fiber‑optic cables, using standard internet protocols.”