A brief visit to the zoo of multipartite entangled states

Event: 
IICQI 2010
Speaker(s): 
Talk type: 
Keynote
Abstract: 

Entanglement is one of the most fascinating features of quantum mechanics and plays a central role in quantum information processing. Genuine multipartite entanglement comes in various species that populate a rich zoo. In this talk we will visit two less well-known members of this zoo: first, the ``phased Dicke states''. Here, a method for their detection will be explained which uses witness operators that are related to diffractive properties. Second, we will study the ``real equally weighted states'' which appear in quantum algorithms. Here, we will answer the question whether most states of this family are indeed multipartite entangled.