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Delicate systems observed with quantum physics

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BARCELONA, Spain – Groups of photons prepared in certain quantum states can noninvasively probe ultrasensitive objects such as individual atoms or living cells, overcoming the standard quantum limit for the first time. The results from the Institute of Photonic Sciences (ICFO) have defeated the limit imposed by quantum mechanics that requires all photons to be polarized in one direction and also in the opposite direction; that is, in two different states at once. This is similar to a thought experiment described by Erwin Schrödinger in 1935 in which he imagined a hypothetical cat in a...Read full article

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    Published: March 2013
    Glossary
    photonics
    The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
    quantum mechanics
    The science of all complex elements of atomic and molecular spectra, and the interaction of radiation and matter.
    Erwin SchrödingerEuro NewsEuropeICFOImagingindividual atomsInstitució Catalana de Recerca i Estudis AvançatsInstitute of Photonic Sciencesliving cellsMorgan MitchellNewsnoninvasive explorationOpticsphotonicsphotonsquantum mechanicsquantum physicsquantum statesrubidium atomsSchrödinger’s catstandard quantum limitultrasensitive objects

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