Microsoft Demos Topological Qubits to Solve Quantum Error Problem

Microsoft's Majorana 1 chip uses topological qubits to address quantum computing's biggest hurdle: error correction. Today's systems need hundreds or thousands of physical qubits to create one reliable logical qubit. Topological protection could shrink that ratio sharply. Microsoft claims its design could scale to a million qubits on a chip the size of your palm—feasible if the physics delivers the noise immunity that standard superconducting designs lack.