# Dynamics of Fragmented Condensates and Macroscopic Entanglement

## TL;DR

This paper explores how increasing interaction strength in colliding condensates leads to phase locking and entanglement of superfluid fragments, highlighting the transition from independent phases to a unified, entangled state.

## Contribution

It demonstrates the transition from independent to phase-locked condensates and the emergence of macroscopic entanglement due to strong coupling effects.

## Key findings

- Weak coupling allows phase-dependent collision outcomes.
- Strong coupling induces phase locking of condensates.
- Fragmented condensates become entangled upon separation.

## Abstract

The relative phase of the order parameters in the collision of two condensates can influence the outcome of their collision in the case of weak coupling. With increasing interaction strength however, the initially independent phases of the two order parameters in the colliding partners quickly become phase locked, as the strong coupling favors an overall phase rigidity of the entire condensate, and upon their separation the emerging superfluid fragments become entangled.