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Quantum Microscope Squeezes Out Noise

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JOEL WILLIAMS, ASSOCIATE EDITOR
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Researchers at the U.S. Department of Energy’s Oak Ridge National Laboratory (ORNL) used quantum optics to advance state-of-the-art microscopy and, in doing so, chart a a path to detecting material properties with greater sensitivity than is possible with traditional tools. The quantum microscope uses nonlinear amplifiers to generate a special quantum light source known as squeezed light. “We showed how to use squeezed light — a workhorse of quantum information science — as a practical resource for microscopy,” said Ben Lawrie of ORNL’s...Read full article

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    Published: September 2020
    Glossary
    interferometry
    The study and utilization of interference phenomena, based on the wave properties of light.
    quantum
    The term quantum refers to the fundamental unit or discrete amount of a physical quantity involved in interactions at the atomic and subatomic scales. It originates from quantum theory, a branch of physics that emerged in the early 20th century to explain phenomena observed on very small scales, where classical physics fails to provide accurate explanations. In the context of quantum theory, several key concepts are associated with the term quantum: Quantum mechanics: This is the branch of...
    noise
    The unwanted and unpredictable fluctuations that distort a received signal and hence tend to obscure the desired message. Noise disturbances, which may be generated in the devices of a communications system or which may enter the system from the outside, limit the range of the system and place requirements on the signal power necessary to ensure good reception.
    Research & TechnologyMicroscopyinterferometrynonlinearquantumquantum microscopyentanglementsqueezed lightnoiseLight SourcesORNLOak RidgeOak Ridge National LaboratoryTech Pulse

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