Amplifying stationary quantum discord and entanglement between a superconducting qubit and a data bus by time-dependent electromagnetic field |
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Authors: | Yi Qian YeQi Zhang JingBo Xu |
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Institution: | Zhejiang Institute of Modern Physics and Physics Department, Zhejiang University, Hangzhou 310027, China |
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Abstract: | We study the dynamics of quantum discord and entanglement between a superconducting qubit and a data bus, which is driven
by a controllable time-dependent electromagnetic field, in the presence of phase decoherence and find that the quantum discord
and entanglement remain at a stationary non-zero value for long time evolution. It is shown that the amount of stationary
quantum discord and entanglement can be enhanced by applying the time-dependent electromagnetic field. |
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Keywords: | stationary quantum discord stationary entanglement time-dependent electromagnetic field |
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