Symmetry and size effects on energy and entanglement of an exciton in coupled quantum dots
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 entangle...
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| Veröffentlicht in: | Chinese physics B 2013-04, Vol.22 (4), p.389-393 |
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| container_title | Chinese physics B |
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| creator | 沈曼 白彦魁 安兴涛 刘建军 |
| description | 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. |
| doi_str_mv | 10.1088/1674-1056/22/4/047101 |
| format | Article |
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| fulltext | fulltext |
| identifier | ISSN: 1674-1056 |
| ispartof | Chinese physics B, 2013-04, Vol.22 (4), p.389-393 |
| issn | 1674-1056 2058-3834 1741-4199 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1753489003 |
| source | Institute of Physics Journals |
| subjects | Broken symmetry Entanglement Entropy Excitation Gaussian Joining Magnetic fields Quantum dots Zeeman effect 外部磁场 对称性 激子态 纠缠 耦合量子点 能源 能量水平 规模效应 |
| title | Symmetry and size effects on energy and entanglement of an exciton in coupled quantum dots |
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