Quantum computing reaches a new level: logical qubit survival rate reaches 96% on IBM Heron
A significant breakthrough has occurred in the world of quantum computing, bringing us closer to the era of fault-tolerant machines. A collaborative effort by researchers and engineers has improved the preservation of logical qubits to 96% on the latest 156-qubit IBM Quantum Heron r2 processor. This achievement was made possible by a fundamentally new approach to error correction.
The Problem of "Idle Noise"
The main enemy of stable quantum computing has long been the so-called "idle noise." In modern systems, correcting errors requires constantly performing intermediate measurements of qubits. However, during these pauses, the remaining components of the processor lose stability, generating new errors. In effect, an attempt to fix one error created a dozen new ones.
Revolution in Architecture
To solve this fundamental problem, physicists completely redesigned the architecture of error correction circuits. The core idea was to radically reduce the time computation is halted. Optimizing algorithms allowed raising the survival rate of logical qubits per error correction cycle from less than 90% to an impressive 96%. This is not merely a cosmetic improvement—it is a paradigm shift.
It is important to understand that the correction process is repeated multiple times at each stage of computation. The forced idling of other elements was a "serious obstacle" to reliable operation, and now this obstacle has been successfully overcome.
The Path to Quantum Supremacy
Although the result was obtained in laboratory conditions on a single processor, its significance for the industry is hard to overestimate. Scalability and fault tolerance remain the main barriers to practical quantum computing. We are seeing corporations actively advancing in quantum error correction, and this trend is accelerating. Recall that achieving the first confirmed cases of quantum advantage is already planned by the end of 2026.
Expert Opinion: Achieving 96% survival is not just a number. It is a demonstration that we are moving from theoretical models to real engineering solutions. If the pace of progress continues, the promised quantum advantage could become a reality even earlier than scheduled. For the crypto industry, this means that issues of post-quantum cryptography are becoming not hypothetical, but quite practical tasks.