Abstract

Entanglement is of central importance for quantum computation, quantum teleportation, and certain types of quantum cryptography. Without entangled states, quantum computation and communication would be no more efficient than their classical counterparts. For two spin 1/2 particles, the maximally entangled states are the Bell states as well as those which are locally unitarily equivalent; for three particles, these are called GHZ states.

© 1998 IEEE