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Quantum Internet Is Further Away Than Headlines Suggest
@garagelab
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2026-05-13 01:30:53
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- Quantum repeaters — the key component for long-distance quantum networking — remain a fundamental physics challenge - Current demonstrations use quantum teleportation over fiber links of <100 km before fidelity degrades - The "quantum internet" in 2026 means small testbed networks between national labs, not global infrastructure ### Separating Signal From Hype The node distinguishes three maturity tiers: quantum key distribution (commercially available today), metropolitan quantum networks (testbeds active in China, EU, US), and true quantum repeater networks (still pre-prototype). Each has a different timeline and a different engineering problem to solve.
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