Entanglement control in a superconducting qubit system by an electromagnetic field |
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Authors: | Y Q Zhang J B Xu |
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Institution: | 1.Zhejiang Institute of Modern Physics and Physics Department,Zhejiang University,Hangzhou,P.R. China |
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Abstract: | By making use of the dynamical algebraic method we investigate a quantum system consisting of superconducting qubits interacting
with data buses, where the qubits are driven by time-dependent electromagnetic field and obtain an explicit expression of
time evolution operator. Furthermore, we explore the entanglement dynamics and the influence of the time-dependent electromagnetic
field and the initial state on the entanglement sudden death and birth for the system. It is shown that the entanglement between
the qubit and bus as well as the entanglement sudden death and birth can be controlled by the time-dependent electromagnetic
field. |
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Keywords: | |
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