# Rapid phase-diffusion between atomic and molecular Bose-Einstein condensates - Condensed Matter > Quantum Gases

Abstract: We study the collisional loss of atom-molecule coherence after coherentlydissociating a small fraction of a molecular Bose-Einstein condensate intoatoms. The obtained $n$-atoms states are two-atom SU1,1 coherent stateswith number variance $\Delta n\propto n$ compared to $\Delta n\propto \sqrt{n}$for the spin SU2 coherent states formed by coherent splitting of an atomiccondensate. Consequently, the Lorentzian atom-molecule phase-diffusion isfaster than the Gaussian phase-diffusion between separated atomic condensates,by a $\sqrt{n}$ factor.

Author: I. Tikhonenkov, A. Vardi

Source: https://arxiv.org/