Non-Markovian Effects on Entanglement Dynamics of Three Qubits

Zhu Zhang

We investigate entanglement dynamics of three independent qubits each locally interacting with a zero- temperature non-Markovian reservoir.The effects of environment's amount of non-Markovianity or parameters in initial states on the three-qubit entanglement dynamics are presented in detail.It is found that the entanglement of such a system revives after a finite dark period when a proper degree of non-Markovian is present.A deep comparison to that in two-qubit system is also made.

W. Cui, Z. R. Xi, Y. Pan

Zhang Zhu-Qiang, Wang An-Min, Qiu Liang

We investigate entanglement dynamics of three independent qubits each locally interacting with a zero-temperature non-Markovian reservoir. The effects of environment's amount of non-Markovianity or parameters in initial states on the three-qubit entanglement dynamics are presented in detail. It is found that the entanglement of such a system revives after a finite dark period when a proper degree of non-Markovian is present. A deep comparison to that in two-qubit system is also made.

G. Mouloudakis, P. Lambropoulos

M Rastegarzadeh, Mohammad Kazem Tavassoly

We investigate an entangled three-qubit system in which only one of the qubits experiences the decoherence effect by considering a non-Hermitian Hamiltonian, while the other two qubits are isolated, i.e., do not interact with environment, directly. Then, the time evolution of the density matrix (for the pure as well as mixed initial density matrix) and the corresponding reduced density matrices are obtained, by which we are able to utilize the dissipative non-Hermitian Hamiltonian model with Markovian and non-Markovian regimes via adjusting the strange of the non-Hermitian term of the total Hamiltonian of the under-considered system.

Charis Anastopoulos, Sanjiv Shresta, B. L. Hu