Inside Horizon Quantum's office in Singapore on Dec. 3, 2025. The software firm claimed it is the first private company to deploy a commercial quantum computer in the city-state.Sha Ying | CNBC InternationalSingapore-based software firm Horizon Quantum on Wednesday said it has become the first private company to run a quantum computer for commercial use in the city-state, marking a milestone ahead of its plans to list in the U.S.The start-up, founded in 2018 by quantum researcher Joe Fitzsimons,...