Symmetry and size effects on energy and entanglement of an exciton in coupled quantum dots |
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| Authors: | Shen Man a Bai Yan-Kui a An Xing-Tao b and Liu Jian-Jun |
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| Institution: | a)c) a) College of Physics Science & Information Engineering and Hebei Advanced Thin Film Laboratory, Hebei Normal University, Shijiazhuang 050024, China b) School of Sciences, Hebei University of Science and Technology, Shijiazhuang, 050018, China c) Physics Department, Shijiazhuang University, Shijiazhuang 050035, China |
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| Abstract: | We study theoretically the essential properties of an exciton in vertically coupled Gaussian quantum dots in the presence of an external magnetic field. The ground state energy of a heavy-hole exciton is split into four energy levels due to the Zeeman effect. For the symmetrical system, the entanglement entropy of the exciton state can reach a value of 1. However, for a system with broken symmetry, it is close to zero. Our results are in good agreement with previous studies. |
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| Keywords: | exciton coupled Gaussian quantum dot symmetry entanglement entropy |
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