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Physicists Develop New Method to Verify Photon Entanglement

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VIENNA, July 15, 2019 — A team of researchers from the University of Vienna and the Austrian Academy of Sciences (ÖAW) has introduced a novel technique to detect entanglement even in large-scale quantum systems. Here is how the technique works: After a quantum system has been generated in the laboratory, the scientists choose specific quantum measurements that are then applied to the system. The results of these measurements lead to either confirming or denying the presence of entanglement. The scientists’ confidence in the existence of entanglement grows exponentially with the number of individual...Read full article

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    Published: July 2019
    Glossary
    quantum optics
    The area of optics in which quantum theory is used to describe light in discrete units or "quanta" of energy known as photons. First observed by Albert Einstein's photoelectric effect, this particle description of light is the foundation for describing the transfer of energy (i.e. absorption and emission) in light matter interaction.
    quantum entanglement
    Quantum entanglement is a phenomenon in quantum mechanics where two or more particles become correlated to such an extent that the state of one particle instantly influences the state of the other(s), regardless of the distance separating them. This means that the properties of each particle, such as position, momentum, spin, or polarization, are interdependent in a way that classical physics cannot explain. When particles become entangled, their individual quantum states become inseparable,...
    educationUniversity of ViennaEuropequantum opticsquantum entanglementquantum communicationsphoton entanglementsingle photonsResearch & Technology

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