Experimental realization of Popper's Experiment: Violation of the Uncertainty Principle?
Abstract
An entangled pair of photons (1 and 2) are emitted to opposite directions. A narrow slit is placed in the path of photon 1 to provide precise knowledge of its position on the y axis and this also determines the precise y position of its twin, photon 2, due to quantum entanglement. Is photon 2 going to experience a greater uncertainty in momentum, i.e., a greater py, due to the precise knowledge of its position y? The experimental data shows y py< for photon 2. Can this recent realization of the historical thought experiment of Karl Popper signal a violation of the uncertainty principle?
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