Quantum Dynamics of Bound Entangled States

Details Quantum Dynamics of Bound Entangled States Quantum Dynamics of Bound Entangled States

2006-11-16

arxiv.org/abs/quant-ph/0611177v1

Physics

Quantum Physics

5 pages, 3 figures

Scientific paper

By using the partial transpose and realignment method,we study the time evolution of the bound entanglement under the bilinear-biquadratic Hamiltonian. For the initial Horodecki's bound entangled state, it keeps bound entangled for some time, while for the initial bound entangled states constructed from the unextendable product basis, they become free once the time evolution begins. The time evolution provides a new way to construct bound entangled states, and also gives a method to free bound entanglement.

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