Detecting multipartite entanglement
Contribuinte(s) |
B. Crasemann |
---|---|
Data(s) |
01/03/2005
|
Resumo |
We discuss the problem of determining whether the state of several quantum mechanical subsystems is entangled. As in previous work on two subsystems we introduce a procedure for checking separability that is based on finding state extensions with appropriate properties and may be implemented as a semidefinite program. The main result of this work is to show that there is a series of tests of this kind such that if a multiparty state is entangled this will eventually be detected by one of the tests. The procedure also provides a means of constructing entanglement witnesses that could in principle be measured in order to demonstrate that the state is entangled. |
Identificador | |
Idioma(s) |
eng |
Publicador |
American Physical Society |
Palavras-Chave | #Physics, Atomic, Molecular & Chemical #State Extension Problem #Density-matrices #Quantum-systems #Separability #Distillability #Optics #240301 Atomic and Molecular Physics #780102 Physical sciences |
Tipo |
Journal Article |