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Two-electron states and state exchange time control in parabolic quantum dot |
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| Institution: | 1. Department of Mechanical Engineering, University of Science and Technology Beijing 100083, PR China;2. Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, ON, M5S 3G8, Canada;1. Department of Physics, Sri Parasakthi College for Women, Courtallam, India;2. Department of Physics, Sri Ramakrishna Engineering College, Coimbatore, India;3. Department of Physics, Kumaraguru College of Technology, Coimbatore, India;4. Department of Chemistry, Kumaraguru College of Technology, Coimbatore, India;1. Department of Physics, Nehru Memorial College, Puthanampatti, 621 007, Tamil Nadu, India;2. Department of Chemistry, DAV University, Jalandhar, 144 012, Punjab, India |
| Abstract: | Using the Heisenberg uncertainty relationship and the stationary perturbation theory we consider two-electron states in a spherically symmetric parabolic quantum dot (parabolic helium atom). The dependence of ground-state energy on the QD size is studied. The energy of two-electron system monotonically decreases with QD radius increase. The problem of the state exchange time control in QD is discussed, taking into account the spins of the electrons in the Russell–Saunders approximation. With the increase of the QD radius the state exchange time increases. |
| Keywords: | Two-electron states Parabolic quantum dot Uncertainty relationship State exchange time |
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