Ramsey interference in one dimensional systems: The full distribution function of fringe contrast as a probe of many-body dynamics

TL;DR

This paper provides a theoretical analysis of Ramsey interference in one-dimensional quasi-condensates, deriving explicit distribution functions for fringe contrast that reveal signatures of many-body decoherence and strongly correlated dynamics.

Contribution

It introduces explicit formulas for the full distribution functions of fringe contrast in 1D systems, linking them to many-body decoherence mechanisms.

Findings

Distribution functions reveal signatures of many-body decoherence

Ramsey experiments can probe strongly correlated 1D systems

Explicit time evolution expressions for fringe contrast

Abstract

We theoretically analyze Ramsey interference experiments in one dimensional quasi-condensates and obtain explicit expressions for the time evolution of full distribution functions of fringe contrast. We show that distribution functions contain unique signatures of the many-body mechanism of decoherence. We argue that Ramsey interference experiments provide a powerful tool for analyzing strongly correlated nature of 1D interacting systems.