The writer is professor of physics at the University of California, Santa Barbara, co-founder of Qolab and winner of the 2025 Nobel Prize in physics
This has been a year of phenomenal achievements for quantum computing, proving its scientific principles are sound. Recent advances include Google’s experiment to clarify the boundary of a “quantum observable” — the point at which a quantum system can exceed the abilities of a traditional computer.
However, theory has a speed advantage over reality. While whiteboards fill up with new protocols and algorithms, quantum machines themselves are hitting a wall.
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