Google’s Quantum Computing Achievement

GOOGLE’S BIG ANNOUNCEMENT

  • They built a chip called Sycamore and wired it into a massive exoskeleton enabling it to run at super-cooled temperatures and execute programs — called circuits — loaded from a control computer.
  • Then, they programmed the computer’s 53 (working) qubits randomly, using both single and two-qubit gates (operations).
  • Finally, they ran the random circuit (program) a million times and recorded the outputs. They were able to do that in about 200 seconds. By their estimation, simulating this process on a uniquely powerful classical supercomputer called Summit would have taken 10,000 years.
  1. Google was able to control errors in the system (a notorious issue with quantum computers) well enough for their outputs to come close to the theoretical results.
  2. Google did the math and simulation at smaller bit lengths to be fairly sure that their error estimates were realistic (this is key because their full 53-bit results can’t be verified on a traditional computer).

IBM’S RESPONSE, AND GOOGLE’S RESPONSE TO IBM’S RESPONSE

WHAT DOES THIS ALL MEAN

This Week in Business History

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