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Einstein called quantum entanglement "spooky action at a distance". Now, a team from the Vienna Center for Quantum Science and Technology (Vienna, Austria) has used an Andor camera to image entanglement events where the influence of the measurement of one particle on its distant partner particle is directly visible.

Quantum Entanglement is one of the most counterintuitive features of quantum mechanics, in which the quantum states of two physically separated particles are linked. If a measurement is made that causes one particle of a pair to take on a definite value, the other particle will take the anti-correlated value instantaneously, even when separated by large distances.

The researchers used an Andor iStar 334T intensified CCD (ICCD) camera capable of very fast (nanosecond) and precise (picosecond) optical gating speeds. Unlike the relatively long microsecond exposure times of CCD and EMCCD cameras which inhibits their usefulness in ultrahigh-speed imaging, this supreme level of temporal resolution made it possible for the team to perform real-time coincidence imaging of entanglement.

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