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Scientists Follow the Dots to Quantum Optical Circuits

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Researchers at the University of Southern California (USC) developed a method that emits uniform single photons from precisely arranged quantum dots. The advancement benefits from an existing method for intentionally arranging quantum dots that USC professor Anupam Madhukar, corresponding author on the latest study, and his team introduced nearly 30 years ago. The researchers said the development is expected to enable the production of optical circuits and, as a result, advancements in quantum computing and communications technologies. Quantum optical circuits use light sources that...Read full article

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    Published: February 2021
    Glossary
    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...
    quantum dots
    A quantum dot is a nanoscale semiconductor structure, typically composed of materials like cadmium selenide or indium arsenide, that exhibits unique quantum mechanical properties. These properties arise from the confinement of electrons within the dot, leading to discrete energy levels, or "quantization" of energy, similar to the behavior of individual atoms or molecules. Quantum dots have a size on the order of a few nanometers and can emit or absorb photons (light) with precise wavelengths,...
    Research & TechnologyOpticsMaterialsquantumquantum computingquantum dotssingle photonsingle photon emissionUniversity of Southern CaliforniaUniversity of Southern California Los Angelessemiconductorsphotonic chipphotonic processorTech Pulse

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