ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Tunneling-induced ultraslow bright and dark solitons in quantum wells |
Fan Shuang-Li (樊双莉), Shi Yi-Ping (石义萍), Zhang Hong-Jun (张红军), Sun Hui (孙辉 ) |
School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China |
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Abstract We show the formation of tunneling-induced ultraslow bright and dark solitons in an asymmetric double-quantum-well structure based on the tunneling induced transparency. In this semiconductor structure, the pump field is replaced by the electron-tunneling coupling, which can be modulated by a static electric field. With appropriate conditions, we demonstrate by modulating the intensity of the static electric field that the interplay between the group velocity dispersion and the self-Kerr nonlinearity results in the generation of dark and bright solitons with ultraslow group velocity.
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Received: 15 February 2012
Revised: 28 April 2012
Accepted manuscript online:
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PACS:
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42.50.-p
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(Quantum optics)
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42.65.Tg
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(Optical solitons; nonlinear guided waves)
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68.65.Fg
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(Quantum wells)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11104176 and 11104174), the Natural Science Foundation of Shaanxi Province, China (Grant No. 2011JQ1008), the Fundamental Research Funds for the Central University, China (Grant Nos. GK201003003 and GK201002024), and the Open Fund from the SKLPS of ECNU, China. |
Corresponding Authors:
Sun Hui
E-mail: physunh@snnu.edu.cn
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Cite this article:
Fan Shuang-Li (樊双莉), Shi Yi-Ping (石义萍), Zhang Hong-Jun (张红军), Sun Hui (孙辉 ) Tunneling-induced ultraslow bright and dark solitons in quantum wells 2012 Chin. Phys. B 21 114203
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