Preserving quantum correlations in two superconducting qubits by applying time-dependent magnetic fields

. We propose a scheme to preserve quantum correlations in a dissipative superconducting qubit system, which consists of two noninteracting dissipative superconducting flux qubits, each driven by a time-dependent magnetic field. We investigate the influence of the initial states and the time-dependen...

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Bibliographic Details
Published in:The European physical journal. D, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2012-08, Vol.66 (8), Article 210
Main Authors: Zhang, Y.Q., He, Q.L., Mu, Q.X., Liu, J.C.
Format: Article
Language:English
Subjects:
Applications of Nonlinear Dynamics and Chaos Theory
Atomic
Classical and quantum physics: mechanics and fields
Exact sciences and technology
Molecular
Optical and Plasma Physics
Physical Chemistry
Physics
Physics and Astronomy
Quantum information
Quantum Information Technology
Quantum Physics
Regular Article
Spectroscopy/Spectrometry
Spintronics
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Summary:. We propose a scheme to preserve quantum correlations in a dissipative superconducting qubit system, which consists of two noninteracting dissipative superconducting flux qubits, each driven by a time-dependent magnetic field. We investigate the influence of the initial states and the time-dependent magnetic fields on the dynamics of quantum correlations between the two flux qubits. It is shown that the quantum correlations between the two qubits can be improved in the Markovian regime and well preserved in the non-Markovian regime by applying the time-dependent magnetic fields.
ISSN:1434-6060
1434-6079
DOI:10.1140/epjd/e2012-30105-6