February 23, 2024, Science Highlights

Creating correlations between photons and superconducting quantum circuits

Nonclassical microwave–optical photon pair generation with a chip-scale transducer

Nature Physics (2024)

Scientists have taken a step toward building a quantum network.

In this paper, the team showed they can create nonclassical correlations between pairs of photons in an optical link and a superconducting quantum circuit. They generated the photon pairs using a process called spontaneous parametric down-conversion using a chip-scale “quantum transducer” device.

This work represents a first step in using optical links to distribute entanglement between remote superconducting quantum processors.

The paper authors are Srujan Meesala, Steven Wood, David Lake, Piero Chiappina, Changchun Zhong, Andrew D. Beyer, Matthew D. Shaw, Liang Jiang and Oskar Painter, conducting their research at Caltech, the University of Chicago and Amazon Web Services.

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