Entanglement and decoherence of coupled superconductor qubits in a non-Markovian environment |
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| Authors: | Ji Ying-Hua and Hu Ju-Ju |
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| Affiliation: | College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang 330022, China; Key Laboratory of Optoelectronic and Telecommunication of Jiangxi, Nanchang 330022, China; School of Optical-Electrical Information and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China |
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| Abstract: | The sudden death of entanglement is investigated forthe non-Markovian dynamic process of a pair of interacting flux qubitsunder a thermal bath. The results show that, for initially two-qubitentangled states, entanglement sudden death (ESD) alwayshappens in the thermal reservoir, where its appearancestrongly depends on the environment.In particular, ESD of the qubits occurs more easily for the non-Markovianprocess than for the Markovian one. |
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| Keywords: | entanglement coupled qubits non-Markovian process concurrence |
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