The computing giant's new quantum roadmap shows its plan to achieve one of the most important goals in all of quantum computing by the end of this decade.

IBM says it’s overcoming a quantum computing challenge with new error-correction techniques for fault-tolerant systems.

There are lots of potential ways to arrange different combinations of data and measurement qubits for this to work, each referred to as a code. But, as a general rule, the more hardware qubits committed to the code, the more robust it will be to errors, and the more logical qubits that can be distributed among its hardware qubits.