The Tech Giants: IBM, Google, and Microsoft
The race to build a fault-tolerant quantum computer is heavily funded by the world's largest technology companies, each taking a slightly different approach.
IBM and Google are leading the charge in superconducting qubits, building massive dilution refrigerators to keep their processors near absolute zero. IBM has a clear roadmap and offers cloud access via IBM Quantum Experience, while Google focuses on demonstrating quantum supremacy.
Microsoft is pursuing topological qubits, a theoretically more robust but practically more difficult approach. If successful, it could leapfrog the competition in terms of error rates.