Entanglement and Decoherence of Coupled Superconductor Qubits in Contact with a Common Environment |
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Authors: | Y H Ji Y Hu Y X Yu |
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Institution: | 1.College of Physics and Communication Electronics,Jiangxi Normal University,Nanchang,China;2.Key Laboratory of Optoelectronic and Telecommunication of Jiangxi,Nanchang,China |
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Abstract: | The sudden death of entanglement is investigated for non-Markovian dynamic process of a pair interacting flux qubits under
a thermal bath. The entangling evolution of the coupled qubits interacting with non-Markov environment is investigated in
terms of concurrence. The results show that, for initially two-qubit entangled states, the sudden death of entanglement (ESD)
always happens in the thermal reservoir, where the appearance of entanglement sudden death strongly depends on the environment.
Especially, ESD of the qubits is easier to occur for non-Markovian process than for Markovian one. |
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Keywords: | |
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