The initial decoherence of the mesoscopic Josephson junction flux qubit |
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Authors: | Su Jie Wang Ji-Suo Zhang Xiao-Yan and Liang Bao-Long |
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Institution: | School of Physics Science and Information Engineering, Liaocheng University, Liaocheng 252059, China |
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Abstract: | For a mesoscopic radio frequency superconducting quantum
interference device (rfSQUID), at a degeneracy point, the system
reduces to a quantum two-state system which can be used as a flux
qubit. When the noise environment is equivalent to a harmonic
oscillators bath, by virtue of an operator-norm measure for the
short time decoherence, this paper investigates the initial
decoherence of the flux qubit operating in the ohmic noise
environment and illustrates its property by means of the numerical
evaluation. |
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Keywords: | mesoscopic rfSQUID flux qubit short-time decoherence |
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