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    Credit: Jacqueline Ramseyer Orrell/SLAC National Accelerator Laboratory
    Claudio Emma and Brendan O’Shea examine experimental apparatus at FACET-II in 2022. Credit: Jacqueline Ramseyer Orrell/SLAC National Accelerator Laboratory
    Credit: Chalmers University of Technology
    FIGURE 1. The new quantum refrigerator, visible as the square chip at the center of the copper enclosure, is built of superconducting qudits to cool a target superconducting qubit.

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    Credit: RubinObs/NOIRLab/SLAC/NSF/DOE/AURA/A. Pizarro D.
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