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Molecular qubits can communicate at telecom frequencies

Grant Smith and Leah Weiss in Awschalom Lab
PhD students Leah Weiss (left) and Grant Smith work in the lab of Professor David Awschalom. (Photo by John Zich)

A team of scientists from the University of Chicago, the University of California Berkeley, Argonne National Laboratory, and Lawrence Berkeley National Laboratory has developed molecular qubits that bridge the gap between light and magnetism—and operate at the same frequencies as telecommunications technology. The advance, published today in Science, establishes a promising new building block for scalable quantum technologies that can integrate seamlessly with existing fiber-optic networks.

Because the new molecular qubits can interact at telecom-band frequencies, the work points toward future quantum networks—sometimes called the “quantum internet...

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