Revealing quantum entanglement via locally noneffective operations
pp. 3-5
in: Peter Bruza, Donald A. Sofge, William F. Lawless (eds), Quantum interaction, Berlin, Springer, 2009Abstract
Quantum entanglement is at the heart of quantum information processing. Various methods for the detection of entanglement have been developed. Here, we will explain an approach that uses locally noneffective unitary operations which, however, do cause a change of the global density matrix - an indication for the existence of correlations. We investigate whether this method can distinguish between classical and quantum correlations.