Decomposed description of Ramsey spectra under atomic interactions

TL;DR

This paper presents a decomposed model of Ramsey spectra considering atomic interactions, providing intuitive insights and a quantitative relationship for characterizing interaction effects without altering atom density, validated experimentally with Yb clocks.

Contribution

It introduces a novel decomposed description of Ramsey spectra under atomic interactions, enabling better understanding and characterization of interaction effects.

Findings

Decomposed model explains contrast loss and asymmetry in spectra.

Quantitative relationship links asymmetry to atomic interaction parameters.

Experimental validation with Yb optical lattice clock confirms model accuracy.

Abstract

We introduce a description of Ramsey spectra under atomic interactions as a sum of decomposed components with differing dependence on interaction parameters. This description enables intuitive understanding of the loss of contrast and asymmetry of Ramsey spectra. We derive a quantitative relationship between the asymmetry and atomic interaction parameters, which enables their characterization without changing atom density. The model is confirmed through experiments with a Yb optical lattice clock.