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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