IBM’s latest quantum breakthrough has edged the crypto world a little closer to its nightmare scenario—a computer capable of breaking Bitcoin’s encryption. In a report published earlier this month, researchers at IBM reported creating a 120-qubit entangled quantum state —the most significant and most stable of its kind to date. The experiment, described in a paper titled “Big Cats: Entanglement in 120 Qubits and Beyond,” demonstrates genuine multipartite entanglement across all qubits—a key step toward fault-tolerant quantum computers that could one day run algorithms powerful enough to crack modern cryptography. “We seek to create a large entangled resource state on a quantum computer using a circuit whose noise is suppressed,” the researchers wrote. “We use techniques from graph theory, stabilizer groups, and circuit uncomputation to achieve this goal.”

Full report : IBM’s new 120-qubit experiment marks a leap forward, advancing technology that could one day crack Bitcoin’s encryption.