Microsoft made a splash with a controversial quantum computer in 2025 - New Scientist

Microsoft unveiled Majorana 1 in February 2025, a quantum computer using topological qubits, sparking industry debate over its unproven but potentially revolutionary error-resistant design. The system relies on topological qubits, theoretically far more stable than conventional qubits, leveraging Majorana zero modes (MZMs)—elusive quasiparticles Microsoft has pursued for years with inconsistent success. Controversy stems from unconfirmed claims about MZMs’ existence and scalability, as past experiments faced skepticism over whether observed signals truly represented these particles. If validated, Majorana 1 could solve quantum computing’s biggest hurdle: error correction, enabling longer, more reliable computations without classical backup systems. Critics argue Microsoft’s approach remains speculative, with no peer-reviewed proof that its topological qubits outperform alternatives like superconducting or trapped-ion designs.