Formation of Ramsey Fringes in Double Bose-Einstein Condensates
A. Eschmann, R.J. Ballagh, B.M. Caradoc-Davies
TL;DR
This paper uses numerical simulations to explore how meanfield effects and diffusion influence Ramsey fringes in double Bose-Einstein condensates, revealing new spatial and asymmetry features.
Contribution
It introduces the concept of an effective detuning to qualitatively explain the observed fringe features in double BECs.
Findings
Spatial variation in Ramsey fringes
Asymmetry between positive and negative detunings
Effective detuning explains fringe features
Abstract
Numerical simulations of Ramsey fringe formation in double Bose condensates are carried out in two spatial dimensions. The effects of meanfield nonlinearity and diffusion in the condensates give rise to new features in the Ramsey fringes, namely spatial variation and an asymmetry between positive and negative field detunings. We introduce the concept of an effective detuning, which for moderate interpulse times provides a qualitative understanding of the new features.
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Taxonomy
TopicsStrong Light-Matter Interactions · Cold Atom Physics and Bose-Einstein Condensates · Spectroscopy and Laser Applications