Abstract

Since the discovery of Quantum Mechanics in the early 20th century there have been speculations that it would only be applicable on a microscopic level and that its laws would cease to be valid in the macroscopic world giving way to classical physics. This lead to an ongoing research effort searching for signatures of quantum behavior in ever larger systems and eventually in macroscopic systems. Perhaps the key quantum signature that has no classical counterpart is quantum entanglement.

© 2009 IEEE