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What Is a Quantum Computer Good For? Absolutely Nothing - Yet
Quantum computing has seen incremental, technical progress despite not capturing public imagination. Researchers have significantly improved qubit information retention, enabling more complex algorithms. Breakthroughs include Princeton's record-holding superconducting qubit and advancements in quantum error correction. Algorithms for real-time error correction during quantum operations have also been developed.Microsoft claims to have created Majorana particles, which could enhance quantum computer scalability and reduce errors. However, experts, including physicist Henry Legg, dispute Microsoft's findings, suggesting their data could indicate quantum dots instead. Legg also criticizes Microsoft for basing its claim on single-device data, advocating for replicated results across multiple chips.Microsoft's quantum lead, Chetan Nayak, firmly defends their results and roadmap, asserting the creation and control of Majorana particles. This controversy is exacerbated by a 2021 Nature retraction of a previous Microsoft-affiliated study claiming strong evidence of Majorana particles. Despite these disputes, some experts remain optimistic about quantum computing's future. Eleanor Crane predicts a useful scientific simulation on a quantum computer by 2028.