Dataset for development and characterisation of a cold atom interferometer and implementation of composite and optimal control pulses

Joel Abraham, Tim Freegarde

Published Oct 22, 2026• 0 citations

Abstract

These are the various datasets used to produce figures in the associated thesis. The folders contain ipynb scripts which are used to process and visualise the data.

DOI: 10.5258/soton/01/d045

Related papers

Coherent spin dynamics between electron and nucleus within a single atom

Lukas M. Veldman, Evert W. Stolte, Mark P. Canavan +4 more

This folder contains all data and all processing files for the paper titled "Coherent spin dynamics between electron and nucleus within a single atom". Folders are structured by the figures in the paper. For each figure, all raw data is provided, together with the Python scripts used to generate the figures featured in the paper.

Sep 4, 20230 citations

Dataset for "Spin-entanglement of an atomic pair through coupling to their thermal motion"

Poramaporn Ruksasakchai

This project contains the dataset and MATLAB scripts used for the paper: "Spin-entanglement of an atomic pair through coupling to their thermal motion". The data includes raw and processed values used to generate the figures in the manuscript.

Jan 1, 20250 citations

Reproducibility package for "Fermionizing the ideal Bose gas via topological pumping"

Maciej Marciniak

The archive contains dataset and python scripts that can be used to reproduce figures presented in "Fermionizing the ideal Bose gas via topological pumping".

May 12, 20250 citations

Data supporting "Neural network decoder for near-term surface-code experiments".

Boris Varbanov, Marc Serra-Peralta, Byfield, David +1 more

This repository contains the datasets and scripts used to generate the figures used in the publication.

Jul 6, 20231 citation

Development and characterisation of a cold atom interferometer with composite and optimal control pulse implementation

Joel Abraham

Developments in the precise control of quantum systems have led to advances in both fundamental research and emerging technologies in areas including quantum sensing and computation. One particularly useful application is atom interferometry, which uses laser pulses to split, redirect, and recombine atomic wavepackets, enabling precision measurements of inertial effects. This thesis presents the construction and characterisation of a compact cold atom interferometer, to meet the longer-term aim of developing an atomic gyroscope. We detail the setup of a rubidium-85 Magneto-Optical Trap (MOT) and the development of a laser to perform Raman transitions across the hyperfine Rb-85 levels. We then demonstrate and characterise the coherent manipulation of the atomic state of the rubidium as well as atom-interferometric fringes, in a Doppler-insensitive configuration. Systematic errors can degrade the performance of laser pulse interactions with cold atoms by reducing the fidelity of the atom–light interactions. In this thesis, we investigate the implementation of composite pulses and optimal control pulses, which use pulses with varying phase sequences and durations to mitigate against experimental inhomogeneities. We also show that phase modulators can introduce distortions in both the applied laser phase and the Raman modulation amplitude, which can in turn degrade pulse performance. To address this, we develop a compensation protocol that corrects for these non-linearities and demonstrate that it leads to a further improvement in pulse fidelity, for the Waltz and Knill composite pulses. Applying this protocol to the rotary echo sequence led to Rabi oscillations that could last 4 times longer, compared to the uncalibrated IQ modulator. Although an optimal control inversion pulse showed more resilience to the IQ modulator distortions, the Mach-Zehnder interferometer sequence was more susceptible to them. It was demonstrated that compensating for IQ modulator non-linearities improved the optimised fringe signal-to-noise ratio, and reduced the phase-offset error by a factor of 2.4.

Oct 22, 20260 citations

Data and code for figures: Microwave quantum illumination using a digital receiver

Shabir Barzanjeh, Stefano Pirandola, David Vitali +1 more

This dataset contains the data presented in the figures of the paper Microwave quantum illumination using a digital receiver. The data for Figures 2 and 3 are gathered in different folders and they are analyzed and plotted using Mathematica. The datasets and scripts were generated and tested using Mathematica 11.

May 1, 20200 citations