1. Localizing spin dynamics in a spin-1 Bose-Einstein condensate via magnetic pulses.
- Author
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Huanbin Li, Zhengguo Pu, Chapman, M. S., and Wenxian Zhang
- Subjects
- *
PARTICLE dynamics analysis , *QUANTUM spin models , *SPIN exchange , *MEAN field theory , *BOSE-Einstein condensation - Abstract
Spin-exchange interaction between atoms in a spin-1 Bose-Einstein condensate causes atomic spin evolving periodically under the single-spatial-mode approximation in the mean-field theory. By applying fast magnetic pulses according to a two-step or a four-step control protocol, we find analytically that the spin dynamics is significantly suppressed for an arbitrary initial state. Numerical calculations under single-mode approximation are carried out to confirm the validity and robustness of these protocols. This localization method can be readily utilized to improve the sensitivity of a magnetometer based on spin-1 Bose-Einstein condensates. [ABSTRACT FROM AUTHOR] more...
- Published
- 2015
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