Abstract

As pointed out by Schrödinger, entanglement contains the essence of quantum mechanics. Entanglement is at the source both of the Einstein-Podolsky-Rosen paradox and of a number of fundamental gedanken experiments in quantum mechanics. This started already with the famous recoiling-slit gedanken experiment of Einstein in 1930. In the attempt to understand and interpret the observed phenomena, Niels Bohr introduced the notion of complementarity into the interpretation of the theory. Complementarity again is most strikingly manifest in experiments on entangled particles.

© 1996 IEEE