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Research PapersNo Access

STATIONARY STATE ENTANGLEMENT AND TOTAL CORRELATION OF TWO QUBITS OR QUTRITS

Chinese Center of Advanced Science and Technology (World Laboratory), P.O. Box 8730, Beijing, P. R. China

Zhejiang Institute of Modern Physics and Department of Physics, Zhejiang University, Hangzhou 310027, P. R. China

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and

Chinese Center of Advanced Science and Technology (World Laboratory), P.O. Box 8730, Beijing, P. R. China

Zhejiang Institute of Modern Physics and Department of Physics, Zhejiang University, Hangzhou 310027, P. R. China

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https://doi.org/10.1142/S0217984905009365Cited by:0 (Source: Crossref)

Abstract

We investigate the mutual information and entanglement of stationary states of two locally driven qubits under the influence of collective dephasing. It is shown that both the mutual information and the entanglement of two qubits in the stationary state exhibit damped oscillation with the scaled action time γT of the local external driving field. It means that we can control both the entanglement and total correlation of the stationary state of two qubits by adjusting the action time of the driving field. We also consider the influence of collective dephasing on the entanglement of two qutrits and obtain the sufficient condition that the stationary state is entangled.

Keywords:

PACS: 03.65.Ud, 03.67.-a, 05.40.Ca

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Vol. 19, No. 30

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History

Received 15 June 2005

Keywords