Dynamics of entanglement in a one-dimensional Ising chain

Details Dynamics of entanglement in a one-dimensional Ising chain Dynamics of entanglement in a one-dimensional Ising chain

2008-05-22

arxiv.org/abs/0805.3396v1

Physics

Quantum Physics

19 pages, 7 figures

Scientific paper

10.1103/PhysRevA.77.062330

The evolution of entanglement in a one-dimensional Ising chain is numerically studied under various initial conditions. We analyze two problems concerning the dynamics of the entanglement: (i) generation of the entanglement from the pseudopure separable state and (ii) transportation of the entanglement from one end of the chain to the other. The investigated model is a one-dimensional Ising spin-1/2 chain with nearest-neighbor interactions placed in an external magnetic field and irradiated by a weak resonant transverse field. The possibility of selective initialization of partially entangled states is considered. It was shown that, in spite of the use of a model with the direct interactions between the nearest neighbors, the entanglement between remote spins is generated.

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