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What Quantum Information, Snowflakes Have in Common, and What We Can Do About It

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Artist's depiction of an electro-optic transducer, an ultra-thin device that can capture and transform signals from a superconducting qubit.

Credit: Steven Burrows/JILA

Researchers from the University of Colorado Boulder (CU Boulder) and the U.S. National Institute of Standards and Technology demonstrated the ability to read out signals from a superconducting quantum bit (qubit) using laser light, without destroying it.

The fragility of qubits is comparable to that of snowflakes; the smallest disturbance can collapse their superposition.

The researchers bypassed this weakness by striking an electro-optic transducer, a thin wafer of silicon and nitrogen, with laser light to convert the superconducting qubit's output into visible light.

CU Boulder’s Cindy Regal said, “Researchers have done experiments to extract optical light from a qubit, but not disrupting the qubit in the process is a challenge.”

From CU Boulder Today
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Abstracts Copyright © 2022 SmithBucklin, Washington, DC, USA


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