New technique in error-prone quantum computing makes classical computers sweat

https://phys.org/news/2023-06-technique-error-prone-quantum-classical.html

"IBM's quantum error mitigation... increased noise, gets less accurate, extrapolated backward estimate answer... zero noise extrapolation... algorithms solve calculations involving electronic interactions employ tensor network simulations of interacting qubits... simulating127 entangled qubits classical computer would require astronomical memory... quantum state represented by 2 to power of 127 separate numbers... housed inside a cryogenic container"

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