Information recycling beam-splitters for atom-interferometry with enhanced sensitivity

TL;DR

This paper introduces a scheme using information recycling with beam-splitters in atom-interferometry to significantly boost sensitivity, achieving over tenfold improvement by leveraging optical information transfer during Raman splitting.

Contribution

The paper presents a novel method of information recycling in atom-interferometry that enhances sensitivity beyond traditional limits using optical mode information.

Findings

Sensitivity improved by more than a factor of 10

Effective information transfer during Raman transition

Model demonstrates practical enhancement with realistic parameters

Abstract

We propose a scheme to significantly enhance the sensitivity of atom-interferometry performed with Bose-Einstein condensates. When a two-photon Raman transition is used to split the condensate into two modes, some information about the number of atoms in one of the modes is transferred to one of the optical modes. We introduce a simple model to describe this process, and find that by processing this information in an appropriate way, the sensitivity of atom interferometry can be enhanced by more than a factor of 10 for realistic parameters.