Quantum Dynamics of Bound Entangled States

Suprabhat Sinha

C. Sudheesh, S. Lakshmibala, V. Balakrishnan

Zhu Guo-qiang, Xiaoguang Wang

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.

Guo‐Qiang Zhu, Xiaoguang Wang

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.

Florian Mintert, Andre R. R. Carvalho, Marek Kuś +1 more

Zhu Guo

By using the partial transpose and realignment method,we study the time evolution of the bound entan- glement under the bilinear-biquadratic Hamiltonian.For the initial Horodeeki'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.