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Properties of strong-coupling magneto-bipolaron qubit in quantum dot under magnetic field |
| Xu-Fang Bai(白旭芳)1, Ying Zhang(张颖)2, Wuyunqimuge(乌云其木格)1, Eerdunchaolu(额尔敦朝鲁)2 |
1 College of Physics and Electronic Information, Inner Mongolia University for Nationalities, Tongliao 028043, China;
2 Institute of Condensed Matter Physics, Hebei Normal University of Science & Technology, Qinhuangdao 066004, China |
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Abstract Based on the variational method of Pekar type, we study the energies and the wave-functions of the ground and the first-excited states of magneto-bipolaron, which is strongly coupled to the LO phonon in a parabolic potential quantum dot under an applied magnetic field, thus built up a quantum dot magneto-bipolaron qubit. The results show that the oscillation period of the probability density of the two electrons in the qubit decreases with increasing electron-phonon coupling strength α, resonant frequency of the magnetic field ωc, confinement strength of the quantum dot ω0, and dielectric constant ratio of the medium η ; the probability density of the two electrons in the qubit oscillates periodically with increasing time t, angular coordinate ψ2, and dielectric constant ratio of the medium η; the probability of electron appearing near the center of the quantum dot is larger, and the probability of electron appearing away from the center of the quantum dot is much smaller.
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Received: 05 November 2015
Revised: 28 March 2015
Accepted manuscript online:
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PACS:
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78.67.Hc
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(Quantum dots)
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71.38.-k
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(Polarons and electron-phonon interactions)
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63.20.kd
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(Phonon-electron interactions)
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| Fund: Project supported by the Natural Science Foundation of Hebei Province, China (Grant No. E2013407119) and the Items of Institution of Higher Education Scientific Research of Hebei Province and Inner Mongolia, China (Grant Nos. ZD20131008, Z2015149, Z2015219, and NJZY14189). |
Corresponding Authors:
Eerdunchaolu
E-mail: eerdunchaolu@163.com
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Cite this article:
Xu-Fang Bai(白旭芳), Ying Zhang(张颖), Wuyunqimuge(乌云其木格), Eerdunchaolu(额尔敦朝鲁) Properties of strong-coupling magneto-bipolaron qubit in quantum dot under magnetic field 2016 Chin. Phys. B 25 077804
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| [1] |
Feynman P R 1982 Int. J. Theor. Phys. 21 467
|
| [2] |
Feynman P R 1986 Foundations of Physics 16 507
|
| [3] |
Cirac J I and Zoller P 1995 Phys. Rev. Lett. 74 4091
|
| [4] |
Gershenfeld N A and Chuang L 1997 Science 275 350
|
| [5] |
Kane B E 1998 Nature 393 133
|
| [6] |
Loss D and DiVincenzo D P 1998 Phys. Rev. A 57 120
|
| [7] |
Nakamura Y, Pashkin Yu A and Tsai J S 1999 Nature 398 786
|
| [8] |
Duan L M, Cirac J I and Zoller P 2001 Science 292 1695
|
| [9] |
Li X Q and Yan Y J 2002 Phys. Rev. B 65 205301
|
| [10] |
Cen L X, Li X Q and Yan Y J 2003 Phys. Rev. Lett. 90 147902
|
| [11] |
Li S S, Long G L, Bai F S, Feng S L and Zheng H Z 2001 Proc. Nat. Acad. Sci.USA 98 11847
|
| [12] |
Li S S, Xia J B, Yang F H, Ni u Z C, Feng S L and Zheng H Z 2001 J. Appl. Phys. 90 6151
|
| [13] |
Furuta S, Barnes C H W and Doran C J L 2004 Phys. Rev. B 70 205320
|
| [14] |
Jordan K and Stephen J P 2005 Phys. Rev. B 71 125332
|
| [15] |
Li H J, Sun J K and Xiao J L 2010 Chin. Phys. B 19 010314
|
| [16] |
Zhao C L and Cong Y C 2012 Acta Phys. Sin. 61 186301 (in Chinese)
|
| [17] |
Chen Y J and Xiao J L 2013 J. Low Temp. Phys. 17 60
|
| [18] |
Sun Y, Ding Z H and Xiao J L 2014 J. Low Temp. Phys. 177 151
|
| [19] |
Eerdunchaolu, Bai X F and Han C 2014 Acta Phys. Sin. 63 027501 (in Chinese)
|
| [20] |
Bai X F, Wuyunqimuge, Xin W and Eerdunchaolu 2014 Acta Phys. Sin. 63 177803 (in Chinese)
|
| [21] |
Zhao Y W, Han C, Xin W and Eerdunchaolu 2014 Superlattices Mi-crostruct. 74 198
|
| [22] |
Lee T D, Low F M and Pines D 1953 Phys. Rev. 90 97
|
| [23] |
Yildirim T and Ercelebi A 1991 J. Phys. Condens. Matter 3 1271
|
| [24] |
Chatterjee A 1990 Phys. Rev. B 41 1668
|
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