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The influences of the dispersion and impurity on the properties of the Gaussian confining potential qubit with magnetic field

Xu-Fang Bai

College of Physics and Electronic Information, Inner Mongolia University for Nationalities, Tongliao, P. R. China

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Wei Xin

Institute of Condensed Matter Physics, Hebei Normal University of Science and Technology, Qinhuangdao, P. R. China

E-mail Address: xinweigood@hotmail.com

Corresponding author.

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, and

Eerdunchaolu

Institute of Condensed Matter Physics, Hebei Normal University of Science and Technology, Qinhuangdao, P. R. China

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https://doi.org/10.1142/S0217979219503223Cited by:6 (Source: Crossref)

Abstract

The influences of the dispersion, the impurity and the electron–phonon coupling (EPC) on the properties of the Gaussian confining (GC) potential qubit with magnetic field were studied by Pekar-type variation method. Results show that the decoherence time will increase with increasing the dielectric constant (DC) ratio, the dispersion coefficient and the EPC strength, respectively. The phase rotation quality factor increases with increasing the dielectric constant ratio, the dispersion coefficient and EPC strength, respectively. The magnetic field has a regulatory effect on the decoherence time and the phase rotation quality factor.

Keywords:

PACS: 78.67.Hc, 71.38.Fp, 63.20.kd

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