IBM’s Quantum ‘Cat’ Roars: 120-Qubit Breakthrough Pushes Bitcoin’s Encryption Risk Closer

IBM has achieved a significant milestone in quantum computing by creating a 120-qubit entangled state, potentially threatening Bitcoin's encryption. Reported in a recent study, the experiment demonstrated full multipartite entanglement and a fidelity score of 0.56, surpassing previous benchmarks. The researchers employed techniques from graph theory and circuit uncomputation to suppress noise, allowing for more scalable quantum verification. This newly developed Greenberger–Horne–Zeilinger (GHZ) state indicates advancements towards fault-tolerant quantum computers capable of running cryptographically relevant algorithms. Although IBM's current system doesn't yet have the capacity to pose a direct threat, its development pushes cryptocurrency security closer to a critical point where quantum threats to Bitcoin are increasingly plausible. The timeline for quantum attacks on digital assets is becoming more pressing, with IBM aiming for fault-tolerant systems by 2030, raising concerns among the crypto community.

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