Qubit Architectures

Speed, Coherence, and Scale: How the Leading Qubit Architectures Trade Against Each Other

No single qubit architecture currently dominates for fault-tolerant quantum computing due to inherent trade-offs between coherence, gate speed, connectivity, and scalability. Leading platforms like superconducting qubits, trapped ions, and silicon spin qubits each resolve these tensions differently, with improvements in one area often costing another.