Entanglement dynamics in two-component Bose--Einstein condensates |
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Authors: | Hao Ya-Jiang and Liang Jiu-Qing |
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Institution: | Department of Physics and Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, China |
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Abstract: | Based on the exact solution of the time-dependent Schr\"{o}dinger
equation for two-species Bose--Einstein condensates (BECs)
consisting of two hyperfine states of the atoms coupled by a tuned
adiabatic and time-varying Raman coupling, we obtain analytically
the entanglement dynamics of the system with various initial
states, particularly the SU(2) coherent state, for both of
cases with and without the nonlinear interactions. It is shown
that the effect of nonlinear interaction on the entanglement
appears only in a longer time period depending on the BEC
parameters. |
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Keywords: | entanglement dynamics gauge transformation spin coherent state |
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