Observation of two-dimensional Anderson localisation of ultracold atoms

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dc.contributor.author White, DH en
dc.contributor.author Haase, TA en
dc.contributor.author Brown, Dylan en
dc.contributor.author Hoogerland, Maarten en
dc.contributor.author Najafabadi, MS en
dc.contributor.author Helm, JL en
dc.contributor.author Gies, C en
dc.contributor.author Schumayer, D en
dc.contributor.author Hutchinson, DAW en
dc.date.accessioned 2020-01-10T03:10:19Z en
dc.date.issued 2019-11-10 en
dc.identifier.citation ArXiv (1911.04858v1). 10 Nov 2019. 10 pages en
dc.identifier.uri http://hdl.handle.net/2292/49497 en
dc.description.abstract Anderson localisation -- the inhibition of wave propagation in disordered media -- is a surprising interference phenomenon which is particularly intriguing in two-dimensional (2D) systems. While an ideal, non-interacting 2D system of infinite size is always localised, the localisation length-scale may be too large to be unmistakably observed in an experiment. In this sense, 2D is a marginal dimension between one-dimension where all states are strongly localised, and three-dimensions where a well-defined localisation-delocalisation phase transition exists. Motivated by the goal of observing and closely studying the quantum interference leading to Anderson localisation in a 2D quantum system, we design a transmission experiment in which ultracold atoms propagate through a custom-shaped disordered channel connecting two reservoirs. This design overcomes many of the technical challenges that have hampered observation in previous works. Our precise control of disorder allows us to tune the localisation length to be shorter than the system size. We observe exponential localisation and demonstrate the presence of strong localisation in a 2D ultracold atom system. en
dc.relation.ispartof ArXiv en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.rights.uri https://arxiv.org/licenses/nonexclusive-distrib/1.0/license.html en
dc.subject cond-mat.quant-gas en
dc.subject cond-mat.quant-gas en
dc.subject cond-mat.dis-nn en
dc.subject quant-ph en
dc.title Observation of two-dimensional Anderson localisation of ultracold atoms en
dc.type Report en
dc.rights.holder Copyright: The authors en
pubs.author-url http://arxiv.org/abs/1911.04858v1 en
dc.rights.accessrights http://purl.org/eprint/accessRights/OpenAccess en
pubs.subtype Working Paper en
pubs.elements-id 786204 en
pubs.org-id Science en
pubs.org-id Physics en
pubs.arxiv-id 1911.04858 en
pubs.number 1911.04858v1 en
pubs.record-created-at-source-date 2020-01-13 en


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