Build-up of coherence between initially-independent subsystems: The case of Bose-Einstein condensates

TL;DR

This paper investigates how coherence develops between initially independent Bose-Einstein condensates upon contact, highlighting the roles of interaction strength and timing in the coherence formation process.

Contribution

It provides a detailed analysis of the dynamic process of coherence build-up in colliding Bose-Einstein condensates, a novel exploration of this phenomenon.

Findings

Coherence develops over time during condensate contact.

Interaction strength significantly influences coherence formation.

The process depends on initial parameters and timing.

Abstract

When initially-independent subsystems are made to contact, {\it coherence} can develop due to interaction between them. We exemplify and demonstrate this paradigm through several scenarios of two initially-independent Bose-Einstein condensates which are allowed to collide. The build-up of coherence depends strongly on time, interaction strength and other parameters of each condensate. Implications are discussed.