Direct measurement of concurrence for atomic two-qubit pure states

G. Romero, C. E. López, F. Lastra, E. Solano, J. C. Retamal

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

45 Citas (Scopus)


We propose a general scheme to measure the concurrence of an arbitrary two-qubit pure state in atomic systems. The protocol is based on one- and two-qubit operations acting on two available copies of the bipartite system, and followed by a global qubit readout. We show that it is possible to encode the concurrence in the probability of finding all atomic qubits in the ground state. Two possible scenarios are considered: atoms crossing three-dimensional microwave cavities and trapped ion systems. © 2007 The American Physical Society.
Idioma originalEspañol
PublicaciónPhysical Review A: atomic, molecular, and optical physics
EstadoPublicada - 5 mar. 2007
Publicado de forma externa

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