Breakthrough in quantum computing: logical qubit survival rate reaches 96% on the IBM Heron processor
Quantum computing is taking another decisive step forward. A group of researchers, in collaboration with IBM, has achieved an increase in the preservation of logical qubits to 96% on the advanced 156-qubit superconducting processor IBM Quantum Heron r2. This achievement was made possible by a fundamentally new approach to error correction that addresses a key problem known as "idle noise."
In modern quantum systems, error correction requires regular internal measurements in the middle of a computation cycle. However, during these pauses, the remaining components of the processor lose stability, generating new errors. Physicists have completely redesigned the architecture of error correction circuits, radically reducing the computation downtime. As a result, the survival rate of logical qubits per correction cycle has risen from less than 90% to an impressive 96%.
The project leader emphasized that the forced idle time of processor elements at each stage of computation is a "serious obstacle" to reliable operation. The new method, tested in laboratory conditions on a single processor, demonstrates that this problem can be solved.
Although the result was obtained in a controlled environment, its significance for the industry is hard to overstate. Scalability and fault tolerance remain the main barriers to quantum computing, and it is in this direction that the most critical research is being conducted.
Recall that IBM previously announced plans to achieve the first confirmed cases of quantum advantage by the end of 2026. This breakthrough in error correction could significantly accelerate the achievement of this goal.
My analysis: Increasing the survival rate of logical qubits to 96% is not just a laboratory curiosity, but a real step toward creating fault-tolerant quantum machines. If this technology scales to larger systems, we can expect that IBM's stated 2026 target will become not just an ambitious goal, but a fully achievable milestone. However, it is worth remembering that the path from a laboratory prototype to an industrial solution is always fraught with challenges and requires time.