Theoretical Analysis of a Large Momentum Beamsplitter using Bloch Oscillations

TL;DR

This paper presents a theoretical and experimental study of using Bloch oscillations in atomic interferometers to enhance path separation and reduce phase fluctuation sensitivity, supported by a numerical model.

Contribution

It introduces a new approach to improve atomic interferometer performance by integrating Bloch oscillations, with validated numerical modeling and analysis.

Findings

Bloch oscillations increase path separation in atomic interferometers.

The numerical model aligns well with experimental results.

Sensitivity to phase fluctuations can be reduced using specific Bloch oscillation arrangements.

Abstract

In this paper, we present the implementation of Bloch oscillations in an atomic interferometer to increase the separation of the two interfering paths. A numerical model, in very good agreement with the experiment, is developed. The contrast of the interferometer and its sensitivity to phase fluctuations and to intensity fluctuations are also calculated. We demonstrate that the sensitivity to phase fluctuations can be significantly reduced by using a suitable arrangement of Bloch oscillations pulses.