120-Qubit Schrödinger Cat Achieved: The Quantum Rubicon Bitcoiners Should Fear
120 qubits just got entangled in a single GHZ "cat state" with 56% fidelity. Scale this to 256 and your private keys become a math problem. The quantum Rubicon isn't coming—it's here. Post-selection rate: 28%. Translation: they're debugging your future vulnerability in real time.
Published October 31, 2025