Researchers use microscopic defects inside a diamond to build a chain of three qubits (pictured as small circles with arrows) that they can use for quantum sensing. They start from a central defect, couple it with a nearby defect, and then use this second defect to find and control a third defect. Credits : Image: Courtesy of the researchers
Researchers use microscopic defects inside a diamond to build a chain of three qubits (pictured as small circles with arrows) that they can use for quantum sensing. They start from a central defect, couple it with a nearby defect, and then use this second defect to find and control a third defect. Credits : Image: Courtesy of the researchers The method lets researchers identify and control larger numbers of atomic-scale defects, to build a bigger system of qubits. In quantum sensing, atomic-scale quantum systems are used to measure electromagnetic fields, as well as properties like rotation, acceleration, and distance, far more precisely than classical sensors can. The technology could enable devices that image the brain with unprecedented detail, for example, or air traffic control systems with precise positioning accuracy. As many real-world quantum sensing devices are emerging, one promising direction is the use of microscopic defects inside diamonds to create "qubits" that can be used for quantum sensing. Qubits are the building blocks of quantum devices.
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