Phase diffusion of a two-component Bose-Einstein condensates:exact and short-time solutions for arbitrary coherent spin state |
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Authors: | Jin Guang-Ri Wang Bo-Bo Lü Yan-Wu |
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Institution: | Department of Physics, School of Science, Beijing Jiaotong University, Beijing 100044, China |
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Abstract: | We investigate phase diffusion of a two-component
Bose--Einstein condensates prepared initially in arbitrary coherent
spin state |\theta_0,\phi_0\rangle. Analytical expression of the
phase-diffusion time is presented for \theta_0\neq\pi/2 case. In
comparison with the symmetrical case (i.e., \theta_0=\pi/2), we
find that the diffusion process becomes slow due to the reduced
atom number variance. |
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Keywords: | Bose--Einstein condensates phase diffusion coherent spin
states |
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