Qubits are remarkably sensitive for their exterior environments, and also stray particles of sunshine can introduce glitches. For meaningful computation, these glitches should be corrected, and mistake correction has to be improved as quantum processors are scaled to much larger numbers of qubits. Scalability: A further key challenge is scalability. https://quantum-computing57890.worldblogged.com/34003846/not-known-facts-about-quantum-computing