Description

2009/06/22,  Hamed Saberi (Ludwig-Maximilian University, Munich, Germany)

Place: Sala de Seminarios del Departamento de Física Teórica e Historia de la Ciencia
Time: 10:30
Title: New trends on sequential generation of entangled states
Abstract
The generation of multiqubit entangled states via a single global unitary operation acting on initially decoupled qubits is in general known to be a difficult problem. Therefore, several theoretical and experimental efforts have been made to develop sequential protocols for the generation of paradigmatic entangled multiqubit states. We demonstrate how the matrix-product state formalism provides a flexible structure for such a quantum factory of states. The proposed method relies on a suitable local optimization procedure, yielding an efficient recipe for the realistic and approximate sequential generation of any entangled multiqubit state under experimental restrictions. We give paradigmatic examples that may be of interest for theoretical and experimental developments.