Abstract
The entanglement dynamics of spin–subband states for an electron in a 2D isotropicRashba quantum dot, with an applied magnetic field of arbitrary strength, is studied. Weexplicitly include the confining (gate) effects as a two-dimensional isotropic harmonicoscillator. The von Neumann entropy, as a measure of entanglement, is calculated as afunction of time, by going to the Fock–Darwin representation. Our results indicate that theperiod and amplitude of the collapse–revival behavior of the entanglement between thespin states and the structural subbands strongly depend upon the size of thequantum dot (confining length) and choice of heterostructural materials. Our results,thereby, provide means of controlling the degree of entanglement by adjusting thesefactors.
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