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Saturday, June 17, 2023

Quantum Computing Advance Begins New Era: IBM


Quantum Computing Advance Begins New Era: IBM

The New York Times

Kenneth Chang, June 14, 2023

IBM researchers simulated the behavior of 127 atom-scale bar magnets in a magnetic field using a 127-qubit quantum processor, generating better answers for the Ising model than a conventional supercomputer. Using error mitigation, the researchers added and varied the amount of additional quantum noise to assess its impact. IBM's Abhinav Kandala explained, "Once we have results of these different noise levels, we can extrapolate back to what the result would have been in the absence of noise." The calculation was performed 600,000 times, each taking less than a thousandth of a second. University of California, Berkeley physicists determined that the quantum algorithm used was more accurate than classical algorithms for complex but solvable configurations of the Ising model.

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