Crypto news

The quantum computing industry has taken a significant step toward practical fault tolerance. Through a collaborative effort between a research group and IBM, the survival rate of logical qubits has been increased to 96% on the latest IBM Quantum Heron r2 processor. This achievement is directly linked to solving a key problem known as "idle noise."

The "idle noise" problem and a new solution

The main obstacle to creating stable quantum machines is the loss of coherence during intermediate measurements. In current systems, for error correction, the processor must regularly halt computations for internal checks. During these pauses, other elements lose stability, generating new errors. Physicists have completely redesigned the architecture of correction circuits, radically reducing the time of forced idle.

Testing on IBM Heron r2

The new method was tested on the advanced 156-qubit superconducting processor IBM Quantum Heron r2. Thanks to algorithm optimization, the survival rate of logical qubits over one error correction cycle was raised from less than 90% to 96%. This is not just a laboratory success — it is a demonstration that fundamental physical limitations can be overcome through engineering methods.

Significance for the industry

The project leader emphasized that forced idle of elements at each stage of computation remains a "serious obstacle" to reliable operation. Although the result was obtained under controlled conditions on a single processor, such research is critically important for scaling. Fault tolerance and scalability remain the main barriers to quantum supremacy, which IBM plans to demonstrate by the end of 2026.

As an analyst, I note: 96% preservation is not just a number, but an indicator that we are transitioning from the era of "raw" quantum experiments to engineering-reliable systems. If the pace of progress continues, IBM's stated milestone of 2026 could be achieved even earlier, opening the era of practical quantum computing in cryptography and materials science.