Communications of the ACM
Physicists Extend Qubit Lifespan in Pivotal Validation of Quantum Computing
Part of the reason for the experiment's success was the introduction of machine learning AI algorithms to tweak the error correction routine.
Credit: ArtemisDiana/iStock/Getty
Yale University physicists demonstrated the feasibility of quantum error correction (QEC) by doubling the lifespan of a qubit.
Said Yale's Michel Devoret, "For the first time, we have shown that making the system more redundant and actively detecting and correcting quantum errors provided a gain in the resilience of quantum information."
In an experiment, the researchers maintained the lifespan of an error-corrected qubit for 1.8 milliseconds by upgrading both a QEC code from 2001 and the quantum circuit fabrication process.
Google's Volodymyr Sivak, formerly of Yale, attributed the breakthrough to "a combination of a whole bunch of different technologies that were developed in the past few years, which we combined in this experiment."
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