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Unhackable Random Number Generator Sidesteps Device Flaws for Ultimate Security

Researchers from Shanxi University and the Chinese Academy of Sciences have unveiled a semi‑device‑independent quantum random number generator (QRNG) that tolerates device imperfections while resisting general attacks. By imposing only an energy bound on emitted quantum states and applying the Kato inequality, the protocol extracts more randomness than it consumes. Implemented with heterodyne detection, the system operates at 100 MHz and achieves a net generation rate of 1.165 Mbps after 5.3 × 10⁹ rounds. The work marks a practical step toward high‑speed, secure QRNGs for real‑world cryptographic applications.