Google has announced a verified milestone in quantum computing that has once again drawn attention to the potential threat quantum technology could pose to Bitcoin and other digital systems in the future.
The company’s latest quantum processor, Willow, has demonstrated a confirmed computational speed-up over the world’s leading supercomputers. Published in the journal Nature, the findings mark the first verified example of a quantum processor outperforming classical machines in a real experiment.
This success brings researchers closer to the long-envisioned goal of building reliable quantum computers and signals progress toward machines that could one day challenge the cryptography protecting cryptocurrencies.
What Google Achieved
According to Google’s study, the 105-qubit Willow chip ran a physics algorithm faster than any known classical system could simulate. This achievement, often referred to as “quantum advantage,” shows that quantum processors are starting to perform calculations that are practically impossible for traditional computers.
The experiment used a method called Quantum Echoes, where researchers advanced a quantum system through several operations, intentionally disturbed one qubit, and then reversed the sequence to see if the information would reappear. The re-emergence of this information, known as a quantum echo,
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