Control of entanglement in Ising-type networks with one and two excitations
Jaroslav Novotný, M. Štefaňák, T. Kiss, Igor Jex · Journal of Physics A Mathematical and General · 2005
We analyse the dynamics of single- and two-particle states in Ising-type networks. The mutual entanglement is quantified using the concept of concurrence. We derive explicit expressions for the concurrence for single- and two-particle initial states in arbitrary passive networks and specify the result for Ising-type networks. We show how to design a network to prepare a prescribed pattern of entanglement for one excitation and study the maximum attainable entanglement for passive optical networks in general. The effect of network randomization on the average entanglement is also studied.