Revealing Single-Trap Condensate Fragmentation by Measuring Density-Density Correlations after Time of Flight
Revealing Single-Trap Condensate Fragmentation by Measuring Density-Density Correlations after Time of Flight
We consider ultracold bosonic atoms in a single trap in the Thomas-Fermi regime, forming many-body states corresponding to stable macroscopically fragmented two-mode condensates. It is demonstrated that upon free expansion of the gas, the spatial dependence of the density-density correlations at late times provides a unique signature of fragmentation. This …