The University of Southampton
University of Southampton Institutional Repository

Can optimised pulses improve the sensitivity of atom interferometers?

Can optimised pulses improve the sensitivity of atom interferometers?
Can optimised pulses improve the sensitivity of atom interferometers?

The sensitivity of atom interferometers depends on the fidelity of the light pulses used as beamsplitters and mirrors. Atom interferometers typically employ pulses that affect €/2 and πfractional Rabi oscillations, the fidelities of which are reduced when there are variations in atomic velocity and laser intensity. We have previously demonstrated the application of optimal control theory to design pulses more robust to such errors; however, if these variations exhibit a time dependence over periods on the order of the interferometer duration then phase shifts can be introduced in the final fringe that potentially reduce the sensitivity. In this paper, we explain why care must be taken when optimising interferometer pulse sequences to ensure that phase shifts arising from inter-pulse variations are not significantly increased. We show that these phase shifts can in fact be minimised by choosing an appropriate measure of individual pulse fidelity.

atom interferometry, composite pulses, optimal control theory
0277-786X
Saywell, Jack
bdee14ca-2df7-495b-8c38-91f539c6b7fd
Carey, Max
c2b2911d-e3a9-4537-b16e-9bbfd3b68c6c
Dedes, Nikolaos
aa6b8f4d-bd3a-4b1c-834d-14126ddba38f
Kuprov, Ilya
bb07f28a-5038-4524-8146-e3fc8344c065
Freegarde, Tim
01a5f53b-d406-44fb-a166-d8da9128ea7d
Padgett, Miles J.
Bongs, Kai
Fedrizzi, Alessandro
Politi, Alberto
Saywell, Jack
bdee14ca-2df7-495b-8c38-91f539c6b7fd
Carey, Max
c2b2911d-e3a9-4537-b16e-9bbfd3b68c6c
Dedes, Nikolaos
aa6b8f4d-bd3a-4b1c-834d-14126ddba38f
Kuprov, Ilya
bb07f28a-5038-4524-8146-e3fc8344c065
Freegarde, Tim
01a5f53b-d406-44fb-a166-d8da9128ea7d
Padgett, Miles J.
Bongs, Kai
Fedrizzi, Alessandro
Politi, Alberto

Saywell, Jack, Carey, Max, Dedes, Nikolaos, Kuprov, Ilya and Freegarde, Tim (2021) Can optimised pulses improve the sensitivity of atom interferometers? Padgett, Miles J., Bongs, Kai, Fedrizzi, Alessandro and Politi, Alberto (eds.) In Quantum Technology: Driving Commercialisation of an Enabling Science II. vol. 11881 (doi:10.1117/12.2598991).

Record type: Conference or Workshop Item (Paper)

Abstract

The sensitivity of atom interferometers depends on the fidelity of the light pulses used as beamsplitters and mirrors. Atom interferometers typically employ pulses that affect €/2 and πfractional Rabi oscillations, the fidelities of which are reduced when there are variations in atomic velocity and laser intensity. We have previously demonstrated the application of optimal control theory to design pulses more robust to such errors; however, if these variations exhibit a time dependence over periods on the order of the interferometer duration then phase shifts can be introduced in the final fringe that potentially reduce the sensitivity. In this paper, we explain why care must be taken when optimising interferometer pulse sequences to ensure that phase shifts arising from inter-pulse variations are not significantly increased. We show that these phase shifts can in fact be minimised by choosing an appropriate measure of individual pulse fidelity.

This record has no associated files available for download.

More information

Published date: 6 October 2021
Additional Information: Funding Information: The authors are grateful for funding from the UK Engineering and Physical Sciences Research Council under grant EP/T517859/1. Publisher Copyright: © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
Keywords: atom interferometry, composite pulses, optimal control theory

Identifiers

Local EPrints ID: 453453
URI: http://eprints.soton.ac.uk/id/eprint/453453
ISSN: 0277-786X
PURE UUID: 11d11de9-b4f0-42ae-8f4e-f804fe74994f
ORCID for Jack Saywell: ORCID iD orcid.org/0000-0002-7867-2128
ORCID for Ilya Kuprov: ORCID iD orcid.org/0000-0003-0430-2682
ORCID for Tim Freegarde: ORCID iD orcid.org/0000-0002-0680-1330

Catalogue record

Date deposited: 17 Jan 2022 17:51
Last modified: 28 Apr 2022 02:07

Export record

Altmetrics

Contributors

Author: Jack Saywell ORCID iD
Author: Max Carey
Author: Nikolaos Dedes
Author: Ilya Kuprov ORCID iD
Author: Tim Freegarde ORCID iD
Editor: Miles J. Padgett
Editor: Kai Bongs
Editor: Alessandro Fedrizzi
Editor: Alberto Politi

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×