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arXiv · 0904.2121

Rapid phase-diffusion between atomic and molecular Bose-Einstein condensates

I. Tikhonenkov·A. Vardi
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Abstract

We study the collisional loss of atom-molecule coherence after coherently dissociating a small fraction of a molecular Bose-Einstein condensate into atoms. The obtained $n$-atoms states are two-atom (SU(1,1)) coherent states with number variance $Δn\propto n$ compared to $Δn\propto \sqrt{n}$ for the spin (SU(2)) coherent states formed by coherent splitting of an atomic condensate. Consequently, the Lorentzian atom-molecule phase-diffusion is faster than the Gaussian phase-diffusion between separated atomic condensates, by a $\sqrt{n}$ factor.

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I. Tikhonenkov, A. Vardi. 2009-04-14. Rapid phase-diffusion between atomic and molecular Bose-Einstein condensates. https://arxiv.org/abs/0904.2121

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