The collisional interaction in a Bose condensate represents a nonlinearity that in analogy with nonlinear optics gives rise to unique quantum features. In this paper, we apply a Monte Carlo method based on the positive-P pseudoprobability distribution from quantum optics to analyze the efficiency of spin squeezing by collisions in a two-component condensate. The squeezing can be controlled by choosing appropiate collision parameters or by manipulating the motional states of the two components.
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Poulsen et al. (2001) studied this question.
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