For the last decade, scientists have been making giant leaps in their ability to build and control systems based on the bizarre rules of quantum mechanics, which describe the behavior of particles at the subatomic scale.

But a challenge is getting delicate quantum systems to play well with mechanical ones—anything with moving parts—which underlie a great deal of existing technology.

In a first, scientists with the Institute for Molecular Engineering at the University of Chicago and Argonne National Laboratory have built a mechanical system—a tiny “echo chamber” for sound waves—that can be controlled at the quantum level, by connecting it to quantum circuits.

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